There still is some work underway as part of the Missouri Department of Transportation (MoDOT) Design Build project spanning Franklin and St. Charles counties.
However, the bulk of the project will begin in the spring, said Area Engineer Judy Wagner.
The $24 million state project addresses roadway safety in 16 locations in Franklin County.
“There still is some work on intersections and side street warning systems,” she told The Missourian. “All of the paving work will resume next year.”
Side street detection and warning systems are used at busy intersections to indicate to drivers when a vehicle is at a side street awaiting to enter the intersection.
A warning system was installed at Highway 50 and Highway AT where a light will flash on Highway 50 when a car is on Highway AT.
Through the project high-friction surfaces have been installed on Highway 100 north of Gray Summit and west of New Haven. Rumble strips have been installed in various locations, including Highway HH and Highway 30.
Chevron signs — which show the edge of the road, dangerous curves or other hazards — have been installed countywide.
Wagner said safety upgrades on Highway 47 are planned for the summer of 2018. Those plans call for “skid resistant” high-friction surface treatment and rumble strips.
The goal of design-build projects is that improvements all can be designed, and then constructed, within a relatively short time frame, so the state and contractor can save funds.
In this project there is a total of 31 safety upgrades in Franklin and St. Charles counties that will be completed by fall of 2019. Grouping the projects within a close proximity cuts the cost of mobilization for construction companies.
MoDOT entered into an agreement with N.B. West Contracting, St. Louis, in May to design and build the safety upgrades. N.B. West is partnered with Horner & Shifrin, Inc., Lochmueller Group and Engineering Design Source Inc. N.B. West was one of five design-build contractor teams competing for the project.
The upgrades range from signage and rumble strips, to pavement improvements and intersection realignments.
At many locations there will be no road closures during the work, or single-lane closures. Any work that disrupts traffic will be done during off-peak hours.
Some work that would require lane closures includes a high-friction surface treatment. The method would help drivers maintain better control of their vehicles. It would not cause any additional wear on tires.
Other improvements at sites within the county are intersection conflict warning systems, a series of signs warning motorists of an upcoming intersection, and that vehicles are entering the intersection from side roads.
LED lights will be added at some locations to draw more attention to stop signs.
Reflective signal backplates, a yellow backplate added to a traffic signal, will improve visibility at traffic lights.
Warning indicators also will be installed during the design-build project. Those include “Stop Ahead” pavement markings warning drivers of an upcoming stop sign, and flashing beacons, a red light mounted on top of a stop sign to help draw attention to the sign.
Some locations also will include turf shoulders, made out of earth and compacted rock base.
Other improvements include the addition of fluorescent curve signs, guard cables, wet reflective pavement markings and rumble strips.
There are several projects on major arteries in the county, including Highways 100 and 47.