The American Council of Engineering Companies of Kentucky (ACEC-KY) recently unveiled this year’s recipients of its prestigious Engineering Excellence Awards. Winners were announced at the awards banquet held on Thursday, March 29 at the Kentucky Derby Museum in Louisville. In all, eight Kentucky firms representing 12 projects throughout Kentucky were recognized. Three projects received Honor Awards, eight received Grand Awards, and the highest award for engineering excellence – the Grand Conceptor Award – went to Community Transportation Solutions (CTS) of Louisville for their Louisville-Southern Indiana Ohio River Bridges project. CTS is joint venture comprised of HMB Professional Engineers, Inc., Parsons Corporation, and Beam, Longest, and Neff, LLC. The Kentucky Transportation Cabinet and the Indiana Department of Transportation were the clients and public sponsors for this award-winning project.
ACEC-KY’s Engineering Excellence Awards program recognizes outstanding achievement and innovation and is open to any firm engaged in the private practice of consulting engineering or surveying. A select panel of judges graded projects on the following criteria:
• Uniqueness and/or innovative applications of new or existing techniques;
• Future value to the engineering profession and enhanced public awareness/enthusiasm of the role of engineering;
• Social, economic, and sustainable development considerations;
• Complexity; and,
• Successful fulfillment of client/owner needs
About the Louisville-Southern Indiana Ohio River Bridges Project:
Community Transportation Solutions, a joint venture of three firms – HMB Professional Engineers, Parsons Corporation, and Beam, Longest, and Neff – was first selected in 1998 by the Kentucky Transportation Cabinet and the Indiana Department of Transportation to provide an Environmental Impact Statement for the Louisville-Southern Indiana Ohio River Bridges (LSIORB) project. In 2004, CTS was selected to serve as the project’s General Engineering Consultant (GEC) to provide oversight for plan development, right-of-way acquisition, utility relocation and assistance during the project’s construction phase.
The single largest transportation project in the history of the Commonwealth of Kentucky, the LSIORB project began construction in June 2013 and was completed on schedule and on budget in December 2016. The Kentucky Transportation Cabinet led construction for the Downtown Crossing portion of the project, with Walsh Construction Company selected as the design-build contractor. The Indiana Department of Transportation led construction for the project’s East End Crossing portion, with the team of Walsh-Vinci-Bilfinger serving as the P3/design-build team.
In just four years, the project added or improved more than 50 miles of new roadway and built more than 60 overpasses and bridges, including two new major river crossings over the Ohio River.
Other ACEC-KY 2018 EEA winners included:
• American Engineers, Inc., located in Louisville, Kentucky, was awarded a GRAND Award for their project The Cellar at Maker’s Mark Distillery. The client was the Maker’s Mark Distillery.
• Cannon & Cannon, Inc. of Bowling Green, Kentucky, was awarded a GRAND Award for their project Sewer Overflow Abatement – Glasgow, KY. The client was the Glasgow Water Company.
• GRW Engineers, Inc., based in Lexington, Kentucky, was awarded a GRAND Award for their project Frankfort Plant Board-Administration Building. The client was the Frankfort Plant Board.
• GRW Engineers, Inc., based in Lexington, Kentucky, was awarded a GRAND Award for their project Frankfort Plant Board-Telecommunications Headend Facility. The client was the Frankfort Plant Board.
• GRW Engineers, Inc., based in Lexington, Kentucky, was awarded a GRAND Award for their project Town Branch Wet Weather Flow Storage and Pumping Facilities. The client was the Lexington-Fayette Urban County Government.
• HDR Engineering, Inc., located in Lexington, Kentucky, was awarded a GRAND Award for their project Danville Water System Improvements. The client was the City of Danville.
• Qk4, Inc., based in Louisville, Kentucky, was awarded a GRAND Award for their project East Campus Roundabout and Gateway to the University of Louisville. The client was the University of Louisville Foundation.
• Qk4, Inc., based in Louisville, Kentucky, was awarded a GRAND Award for their project The Left “Over” Loop–US 60/KY 4. The client was the Kentucky Transportation Cabinet, District 7 (Lexington).
• American Engineers, Inc., based in Glasgow, Kentucky, was awarded an HONOR Award for their project The Denes Field Transformation. The client was Western Kentucky University.
• EA Partners, PLC, based in Lexington, Kentucky, was awarded an HONOR Award for their project Safety, History and the Future. The client was the Kentucky Transportation Cabinet, District 2 (Madisonville).
• Stantec Consulting Engineers, Inc., located in Lexington, Kentucky, was awarded an HONOR Award for their project Martin Hill Road (KY 1417) Bridge Replacement. The client was the Kentucky Transportation Cabinet, District 5 (Louisville).
The American Council of Engineering Companies of Kentucky, based in Frankfort, is a nonprofit membership organization comprised of 85 engineering firms employing more than 2,500 people across the Commonwealth. As the “face and voice for engineering businesses in Kentucky for advocacy, access and education,” ACEC-KY actively promotes the increased quality of engineering services and seeks to improve the business climate for consultant engineers so they can continue to deliver services and engineering solutions that improve the quality of life for all Kentucky citizens.
(Additional Project Information Enclosed)
ACEC-KY presented GRAND Awards for the following projects:
(Listed Alphabetically, by Firm)
Grand Award: The Cellar at Marker’s Mark Distillery
American Engineers, Inc.
Maker’s Mark Distillery in Loretto, Kentucky, was looking to increase production of Maker’s 46–the Distillery’s top-shelf bourbon whisky, aged nine weeks longer than their traditional Maker’s Mark bourbon. But there was a catch—unlike traditional bourbon aging that is reliant on the extreme seasonal temperature fluctuations, the Maker’s 46 chemical process only worked in a cold environment, limiting production to Kentucky’s short 7-month winter season. To keep up with the demand for their product, the Distillery needed a barrel storage facility capable of producing Maker’s 46 year-round.
American Engineers, Inc. (AEI) provided the solution with the structural design of The Cellar, based on the centuries old wine cellar. The Cellar is a distinctive storage building recessed into the side of a hill with 10,000 tons of rock excavated to create a 35-FT tall natural limestone wall that serves as the rear interior wall. Weathered rock and erodible limestone necessitated excavating 15 feet further into the hillside than planned to achieve a structurally sound rock shelf.
Incorporating the rock into the finished structure eliminates expensive retaining walls and naturally provides a consistent 50° environment for aging all year long. The Cellar roof, designed like a bridge superstructure with 4-FT wide, 60-FT long precast concrete box beams, eliminates interior columns for efficient rack placement.
18-inch thick reinforced concrete side walls were dowelled into the rock below and stair-stepped down the hillside, taking further advantage of the natural limestone. The green roof with two feet of soil has a drainage blanket below that drains water to the scuppers and away from the building.
Energy efficiency and green infrastructure made the facility a candidate for LEED certification. Five additional months of production met the sales demand and supports the Kentucky bourbon industry, where more than $1.1 billion in capital projects benefitting the engineering community are planned or underway. This one-of-a-kind storage facility achieved the production objectives of the client while creating a distinctive structure reflective of the first-class Maker’s Mark quality, tradition, culture, and aesthetics.
Grand Award: Sewer Flow Abatement – Glasgow, Kentucky
Cannon & Cannon, Inc.
Pressure from Kentucky Division of Water (KY-DOW) helped accelerate plans of Glasgow Water Company (GWC) to reduce/eliminate the number of sanitary sewer overflows in their sanitary sewer collection system. Recording 15 locations along the Southside Interceptor with historical overflows during significant rainfall events, GWC needed a plan to mitigate and preferably eliminate the overflow problem. GWC partnered with Cannon & Cannon, Inc. (CCI) to help solve the problem. GWC and CCI worked together to develop a plan and determine a cost-effective way to increase the capacity of the wastewater system and convey the sewer to the wastewater treatment plant for treatment before releasing into the environment.
The effort included upgrading the Southside Interceptor Sewer, constructing a seven-million-gallon storage basin, and upgrading the wastewater treatment plant to handle increased sewer flows. One of the largest projects GWC had undertaken in over 30 years, it was critical to find the most cost-efficient approach to comply with KY-DOW’s demands and be financially responsible to the utility customers.
The planning, design, and construction of this complex project was completed ahead of schedule and below the estimated construction budget. The original schedule identified the first quarter of 2018 as completion date of all project phases. The work was completed nearly 9-months ahead of schedule in the Summer of 2017. The original construction budget was just over $17-million with the final spend for GWC at approximately $16.8-million.
After project completion, the GWC wastewater system had its first major test. Remnants of Hurricane Harvey hit the Glasgow area on September 1, 2017 – the project was designed to a two-year/24-hour storm – nearly 100 times greater, the rain that fell that day was comparable to a 200-yr storm event. The wastewater collection system did not have any sewer overflows along the Southside Interceptor, the seven-million-gallon basin completely filled, and the wastewater treatment plant contained and treated the flows it received.
Grand Award: Frankfort Plant Board – Administration Building
GRW Engineers, Inc.
The Frankfort Plant Board (FPB) is beginning a new chapter. The municipal utility’s primary operations and its employees have moved into their new headquarters.
Previously scattered at multiple locations for more than 50 years, employees in accounting, human resources, management, IT, and dispatch, as well as customer service departments are working together in the same building.
FPB serves customers in the Frankfort/Franklin County community, as well as portions of surrounding communities. They rely on the Frankfort Plant Board to support myriad activities from keeping the lights on to staying up-to-date in the age of smart phones and webinars. The FPB provides electric, water, telephone, cable TV, broadband internet, and security systems services.
Underpinning this major consolidation project are the efficient and secure, integrated and resilient building systems such as IT infrastructure, electrical, lighting, HVAC, access control and security, audio/visual, and video production. The new 46,000 square foot, three-level building on the East-West Connector in Frankfort improves and balances multiple private and public functions.
GRW closely collaborated with the FPB in all aspects of the project from programming through final completion of construction. Throughout the process GRW got to know the client and gain a better understanding of how their business functions. This collaboration allowed for the building systems to be designed and put to use in ways tailored to suit the needs of the FPB, its employees, and its customers.
At the forefront of this effort was delivering a more welcoming and enjoyable customer experience. This was accomplished, in part, by incorporating drive-through tellers with video interface and a fully equipped community/conference room.
The team effort on display throughout the project has continued, evidenced by improvements in customer service such as:
• Reduced foot traffic and shorter lines on busy days, primarily because of the new drive-thru payment option.
• Community use of the conference room. Fully equipped with built-in projectors, audio/visual production equipment and other features, it’s been used for church events, state agency meetings, baby showers and other activities. Regular meetings are being scheduled there beginning in 2018.
Other building systems address energy-efficiency, as well as reliability and redundancy. Fully networked LED luminaires are used inside and outside. A diesel-engine generator offers a source of emergency power, and a fully redundant AC UPS system powers the data center. A hardened portion of the building housing key systems is designed to withstand near-tornado level wind events and category IV level seismic events.
From the start, this project sought to transform existing outdated, separate, and undersized facilities into a single, energy-efficient, integrated, and welcoming building. Accomplishing complex technical goals amid a setting focused on serving the public makes this new building an exciting symbol of transformation and municipal utility management.
Grand Award: Frankfort Plant Board – Telecommunications Headend Facility
GRW Engineers, Inc.
It’s possible to consider the Frankfort Plant Board (FPB)’s Telecommunications Headend Facility the data center for Kentucky’s capital city, as well as Franklin County and vicinity.
Data centers like the FPB’s are becoming more complex, according to several sources including the U.S. Department of Energy. They are growing in size, and account for 1.8 percent of total U.S. electricity use having consumed 70-billion-kWh in 2016 – a 280 percent rise since 2000.
In Kentucky’s state capital, Frankfort/Franklin County, and portions of surrounding communities, nearly every email, telephone call, and cable TV program relies on the Telecommunications Headend Facility. This building is vital to keeping customers online and connected to services they rely on daily.
The new 6,725 square foot Telecommunications Headend Facility replaces a cramped, outdated existing facility. In addition to equipment, the building houses offices, open office space for technical staff stations, conference area, and basic office functions.
The facility’s building systems offer more than an upgrade, they give the FPB the infrastructure it needs to plan and prepare for future requirements and improvements for customers (i.e., space to replace existing coaxial cable on site, ability to think realistically about network improvements such as expanding bandwidth or implementing faster fiber-to-home architecture).
The building design incorporates vibration mitigation techniques to prevent service disruption in case of construction activities, giving the FPB and its neighbors a sense of security as plans are made for the replacement of an aging underground reservoir adjacent to the facility.
Designed for maximum reliability, the facility includes the following fully redundant equipment and/or systems: two 600KW diesel-engine generators, AC UPS system with maintenance bypass/paralleling switchboard for AC-powered equipment, and DC power plant for -48V DC telecommunications equipment.
Attention also was paid to the work space. People space is more clearly and carefully separate from equipment space. Centralized remote monitoring capabilities mean employees much less frequently need to enter inhospitable areas designed to house batteries and keep equipment cool.
The end users – the employees working at the facility – have been modest in expressing their expectations of their new workspace. But there are reports that the new facility has resulted in several quick wins. After leaving the cramped, sometimes standing-room-only workspace, they’ve experienced more space to:
• Exchange ideas, layout blueprints, maps, etc.
• Gather with equipment manufacturing reps and vendors for on-the-spot-training with building equipment available for testing.
Considering all factors, it’s easy to see how Frankfort’s new Telecommunications Headend Facility embodies resiliency, redundancy, and building systems that allow for future improvements – all in a challenging setting.
Grand Award: Town Branch Wet Weather Flow Storage and Pumping Facilities
GRW Engineers, Inc.
Under a Federal Consent Decree to improve water quality in area waterways via reduction of sanitary sewer overflows, the Lexington-Fayette Urban County Government (LFUCG) selected GRW to provide a two-phase design for storage of 44 million gallons (MG) of wastewater with the ability to divert up to 39,000 gallons per minute (gpm) to the storage facility.
The concept design provided to GRW from a previous study recommended diversion of wastewater flow to the Town Branch Wastewater Treatment Plant (WWTP) when flows exceed 70 million gallons per day (MGD). With an estimated Phase 1 construction cost of $28,000,000, the concept design facilities included two diversion structures; a 22 MG covered, rectangular storage basins; and a 39,000 gpm/56 MGD pump station constructed as Phase 1, as well as a second 22 MG covered, rectangular basin constructed as Phase 2.
The selected site was a construction debris fill (demolished concrete, masonry, large quantities of reinforcing steel, etc.) area from a previous expansion of the adjacent Town Branch WWTP. Preliminary geotechnical investigation indicated unsuitable soil depths from 10 to 25 feet deep. The concept design recommended excavation and removal of the bad material, followed by construction of the storage tank foundation and floor 20 feet below grade, and bearing on competent rock.
During GRW’s review of the provided concept design and moving toward final design plans, progressive opinions of cost to construct the initial rectangular basin concept design continued to escalate. GRW’s opinion of cost for the rectangular basin topped $34,000,000, approximately $6,000,000 greater than the initial budget.
GRW engaged LFUCG in discussions to rethink the original concept design and allow the design team to provide an alternate design. Subsequently, GRW applied value engineering techniques to develop an innovative, alternative design solution, which ultimately saved LFUCG approximately $15,000,000. The most significant cost savings resulted in the use of a domed, 22 MG prestressed circular concrete tank instead of a rectangular storage tank. Additional costs savings were realized through the elimination of the expensive “tipping bucket” technology for basin flushing.
GRW also provided a more advantageous solution to mitigate challenging site conditions. After determining the excavated debris fill area would not support the tank foundation design recommended in the concept design, GRW suggested further soil investigations and concluded that the debris could remain on site if the tank was supported with a drilled-shaft foundation. The revised foundation design saved approximately $750,000 in transport/landfill costs.
Completed with a $15 million cost savings, the Town Branch facilities prevent untreated sanitary sewer overflows within area waterways, which in turn promotes the health, safety and welfare of the public and environment. Value engineering, client collaboration and innovative thinking were integral components to the project’s success.
Grand Award: Danville Water System Improvements
HDR Engineering, Inc.
In the 234 years since its founding, the City of Danville’s leadership has sought to avoid learning the hardship of this lesson. Their decisions regarding water infrastructure influenced the opportunities that future generations would have in economic, social, and environmental progress. An example was their foresight to partner in the construction of Herrington Lake, in 1923, which has served as the most stable water supply source in the region. Continuing their foundation of innovation and forward thinking that had been part of their water utility, the City retained HDR to design a new water treatment facility that would be a fusion of modern treatment technologies, constructed in an urban environment and in harmony with its surroundings. Further, all this would need to be achieved within the same footprint as the existing plant and without any interruption in the delivery of water to their customers. Like many communities, Danville had no back-up water supply.
HDR embraced the challenges set forth to successfully design and oversee construction of this generational project which would turn out to be the largest single investment the City had ever made. Project details were communicated and input solicited from citizens at 22 public meetings held during design. The design included demolition of virtually all existing treatment elements, re-purposing 100% of the remaining historical buildings, and construction of five new buildings or
treatment basins. This was a complete renovation of everything within the same space. The project was constructed over 36 months, never resulted in an instance of service interruption, and was constructed under budget with change orders less than 1% of the total project. HDR also worked with the City to secure project funding from federal agencies, that in large measure, typically don’t offer funds to communities like Danville.
The details for much of the work that went on are provided in the application. Several innovative measures in technology, method and construction are to be found. During the design phase, the design team identified three primary drivers for the project, including:
• Securing the reliability of water treatment operations by modernizing Danville’s aging infrastructure
• Assure the water supply to meet human and economic needs in Danville and adjacent communities for the next 40 years
• Implement treatment and operational technologies that enable Danville to achieve compliance with all current and foreseeable water quality regulations
All things in Danville carry an element of history. With the successful completion of this project, HDR has helped the City to honor their past achievements in the area of water supply while designing and constructing a new facility that will secure a reliable, high-quality water in sufficient volume to meet the needs of their future.
Grand Award: East Campus Roundabout and Gateway to the University of Louisville
To provide a campus gateway worthy of one of Kentucky’s largest, best, and proudest universities, University of Louisville invested in an ambitious decade-long program to improve its roadways and to enhance its streetscapes.
The final phase of his endeavor was the East Campus Roundabout and Gateway project on its downtown Louisville (Belknap) campus. Its aim was to provide safe and effective roadways for vehicles, bicycles, pedestrians, and wheelchairs. The design would also employ aesthetic elements as set forth in the campus master plan.
Simply stated, the challenge was this: within one of the busiest campus intersections at a major university with 30,000 students and staff, design and build a series of urban roadway and streetscape improvements on an impossible timeline, with limited budget, and with limited disruption to campus life.
Relocating overhead utilities underground was a costly, time consuming, and complex part of the project. Engineering design choices for relocation of utilities would lead to overall project failure … or success. Because failure was not an option, our project team’s mantra became “Make This Work,” which we would repeat each time a seemingly insurmountable obstacle emerged.
To mitigate the risks of the unknowable underground situation, we employed a unique “contract up front” and “design-on-the fly” approach to design and construction. By asking contractors to submit multiple bid packages based on
various scenarios—up front—we were able to mitigate the risks of the subsurface unknowns. In this way, we were able to avoid contract modifications downstream that could severely hamper the project schedule.
Then, as excavation commenced, we were able to assess the situation and “design on the fly.” This somewhat risky, novel approach resulted in a project completed on-time and under-budget, with little disruption to campus life.
Today, because of resourceful engineering and construction methods, the East Campus Roundabout serves as the primary gateway to University of Louisville’s campus.
Grand Award: The Left “Over” Loop – US 60/KY 4
Since its opening in 1965, the busy cloverleaf connecting New Circle Road (KY4) with Versailles Road (US60) near downtown Lexington had become increasingly dangerous. The interchange posed several decades-old problems:
• Dangerous weaves from vehicles entering and exiting from New Circle Road onto Versailles Road,
• Dangerously short acceleration taper onto westbound Versailles Road from New Circle inner loop ramp, and
• Dangerous left turn for vehicles from entering the New Circle ramp from westbound Versailles Road.
Aesthetic needs further complicated the project. Proud Lexingtonians think of this stretch of Versailles Road as “The Gateway to the Bluegrass.” An unnecessarily “overbuilt” solution would have spoiled the sense of place provided by iconic Calumet Farm and ivied, historic Keeneland Racecourse.
The problem was simple; the solution was not. Our solution is what we believe to be the first of its kind interchange—it appears in no textbook and is yet unnamed. To eliminate the New Circle Road weave, we replaced the dangerously tight existing loop ramp with a sweeping 30 mph horizontal curve and fly over.
To eliminate the Versailles Road weave, we re-routed and tied in a ramp through the spill through and then onto New Circle. Importantly, KYTC built this improvement within existing right of way, thereby saving millions in unnecessary costs.
By reworking the merge from the New Circle exit ramp onto Versailles Road into a parallel acceleration taper, we provide space for added acceleration time, thereby reducing the danger of rear end accidents posed by stopped traffic.
The left “over” loop helped retain the equestrian aesthetics of corridor, as we were able to avoid adding obtrusive traffic signals or adding a second flyover bridge. Further, to retain the sense of place, we regraded areas within the interchange to reflect the rolling topography of the area.
ACEC-KY presented HONOR Awards for the following projects:
(Listed Alphabetically, by Firm)
Honor Award: The Denes Field Transformation
American Engineers, Inc.
Western Kentucky University (WKU) was a victim of its own success. Demand and need for campus-wide improvements and upgrades, academically and athletically, had dramatically escalated over the last 15 years. Recent upgrades and expansions to the athletic complex areas between Avenue of Champions and University Drive (US 68) had exacerbated a problem the University had been dealing with for some time—substandard stormwater infrastructure in the very area where improvements were rapidly being made. Additional impervious areas (primarily roof and pavement) were generating more stormwater volume and either taxing or, in some cases, completely overwhelming the existing stormwater systems. Large capital projects to overhaul the stormwater infrastructure, based on cost and impact to existing facilities, were not an option. One particular problem was the sheet flow overrun of the existing sodded Denes Field baseball field from the upstream watershed which included the practice football field. Some measures had been implemented to mitigate the problem, such as improvements to the practice football field drainage system and strategically located slotted drain near the baseball complex, but significant rain events were still overwhelming the baseball field and making it unplayable for days after the event. Something had to be done to mitigate this issue once and for all.
WKU Project Manager Alfsono Casana, PE, MS, GISP, saw an opportunity for a “double play” when the possibility to install a new synthetic turf baseball field arose. WKU selected AEI to provide a two-part solution to the project – 1) install a new field with site layout, underground utility, grade and existing stormwater outlet constraints that not only drains the field rapidly but, 2) also accepts and handles the offsite stormwater volume overwhelming the field during rain events. AEI developed a split outlet design to collect field and offsite drainage and ensure that receiving stormwater systems would not be surcharged. AEI provided full surveying including LiDAR subgrade scanning, permitting, civil site and drainage plans, construction inspection and monitoring, materials testing, and contractor management to complete both objectives on schedule and under budget.
Honor Award: Safety, History and the Future
EA Partners, PLC
The one-mile stretch of U.S. 60 in Henderson, Ky., could be described as a thin line between a figurative rock and a hard place. On one side is a historical property, home to the Barrett-Keach Farm, with grounds that run approximately two-thirds of a mile along this stretch. Added to the National Register of Historic Places in 2001, the property, also known as The Elms, contains nine historic structures, including a brick smokehouse built in 1852.
On the other side is Henderson Community College, a huge asset to the Henderson community, providing education to the future workforce as well as a community theater facility for the area. The entrance to the college is along this stretch of roadway, and for years, was off a substandard crest vertical curve.
U.S. 60 was a two-lane roadway, which did not have a turning lane for traffic turning into the college. Vehicles sitting at the entrance trying to get out of the college couldn’t see traffic coming over the curve until the last minute, and vice versa.
In addition, a bike path from Henderson stopped before reaching the college at the busy intersection of Kentucky 425 Henderson Bypass—an intersection that sees nearly 35,000 vehicles every day.
These two things combined caused countless unnecessary accidents and the Kentucky Transportation Cabinet District 2 sought to remedy the issue by widening the roadway—between the rock and the hard place. Enter EA Partners, who developed an alignment that kept safety at the forefront while preserving history and helping Henderson Community College plan for the future.
EA Partners developed a design that successfully widened a two-lane, dangerous country road to a safe, five-lane highway—four lanes and a continuous turning lane. The design incorporated a plan for bicyclists and pedestrians to cross U.S. 60 from the north to the south at the Bypass intersection, then both directions of travel would utilize a multi-modal path on the south side of the roadway to reach or leave the college.
The alignment did not impact the valuable, historical property—it even incorporated the entirety of the property fronting the roadway so that future projects would not impact this community asset.
Construction of the roadway minimally impacted utilities and did not affect a fiber-optic line, which provided internet to the college, while the roadway was built. It also was compatible with the master plan of the college, bringing a safer, wider roadway to the institution of higher learning in Henderson and allowing for safe, controlled bicycle and pedestrian access.
In this instance, the plan developed by EA Partners focused on safety, preserved history, and helped Henderson plan for the future by educating a workforce and opening up lanes to economic development in the area.
Honor Award: Martin Hill Road (KY 1417) Bridge Replacement
Stantec Consulting Engineers, Inc.
In April 2015, unrelenting rainfall caused Knob Creek to wash out the 61-foot single-span bridge that crossed it. The 600 average daily users of the bridge had to use a 10-mile detour while the bridge was out of service. As a result, designing a replacement structure was just part of the challenge—replacing the structure quickly was the true key to this project’s success.
A close partnership between the client/owner (the Kentucky Transportation Cabinet), the design consultant (Stantec), the contractor (Mac Construction), and various agencies/utility companies was essential to completing this project swiftly.
Working under an aggressive schedule, Stantec completed design and construction plans (as well as right-of-way plans, site survey, and hydraulic/scour analysis) in just 76 days. The KYTC met an equally-aggressive approval schedule and coordinated with various utilities to keep this project moving at a fast pace. Stantec and the KYTC each worked closely with Mac Construction while the bridge was being built; in fact, the waterline relocation was included in the bridge replacement contract to expedite the construction letting date. The replacement bridge opened to traffic by the end of the year, less than nine months after the existing bridge washed out.
The new two-span bridge is 134 feet long, creating a larger floodway and reducing hydraulic/scour issues. Using precast side-by-side box beams helped speed construction of the superstructure. The substructure was skewed 20° to better align with the current channel and is supported on drilled shaft foundations to better withstand scour.
Channel protection was a key factor because the existing stream bank is highly erodible. Sheet piling and extensive rip rap slope protection will prevent local erosion, but the bridge is also designed to accommodate an additional span if the upstream channel continues to migrate.
While the bridge was designed and constructed in a matter of months, various design measures will help the structure last for decades—providing this community safe, reliable, and direct access to the rest of Bullitt County.