Summer highway construction season is here. What to know about Missouri road projects
Aside from serving as the unofficial kickoff to summer, Memorial Day also serves as a kickoff to the summer highway construction season in Missouri.
The Missouri Department of Transportation is warning motorists to expect delays as several projects are either already underway or will start this summer.
"We're working to deliver more improvements to the state's transportation system than ever, and we need everyone's help to keep our highway workers — and each of us who use the roads — safe in that effort," said State Highway Safety and Traffic Engineer Jon Nelson. "Your cooperation and decisions behind the wheel could be the reason a family gets home safely — including your own. Buckle up, put your phone down, slow down, and drive sober this summer, especially in work zones."
MoDOT notes 10 people were killed and 83 were seriously injured in crashes over the Memorial Day holiday last year, and officials are aiming for zero fatalities this year.
Information on road construction, lane closures, and delays is available through MoDOT's Traveler Information Map.
Major projects to be aware of include:
Northwest Missouri: Interstate 29 in Atchison County is narrowed to one lane in each direction for repairs to the north and southbound Mill Creek bridges between Mound City and Corning.
Northeast Missouri: Interstate 72 and U.S. Highway 36 in Marion County has both east and westbound lanes narrowed to one lane with a 12-foot width restriction from Missouri Route 79 to Illinois Route 106 for bridge rehabilitation work on the Mark Twain Memorial Bridge over the Mississippi River in Hannibal. A full closure begins May 30 for up to 30 days.
Kansas City area: Interstate 435 in Clay County has closed left northbound and southbound lanes from Parvin Rd. to 48th St. for bridge rehabilitation until approximately Dec. 1, meaning a new traffic configuration is in place on I-435.
Central Missouri: Multiple projects are underway as part of the Improve I-70 Columbia to Kingdom City project. Interstate 70 eastbound between mile markers 137 and 144 (Route J to Route M) is shifted with narrow lanes, and the ramps to and from Route J at Exit 137 are closed; U.S. Highway 63 south of I-70 in Columbia is narrowed to one lane each direction between the Broadway overpass and the Conley Road underpass.
Jefferson City: Multiples bridges in Jefferson City are undergoing rehabilitation projects. Projects are along U.S. Highway 54, which is narrowed to one lane in each direction from just south of Missouri Boulevard to just south of Stadium Boulevard.
St. Louis area: There are multiple projects in the St. Louis area. Work began in mid-March to add a third lane on Interstate 64 in St. Charles County between Route K and the I-70/I-64 interchange, part of the Improve I-70 Warrenton to Wentzville section. Motorists traveling in both directions of I-64 will notice crews working behind barrier walls on the median between Route K and Lake Saint Louis Boulevard this summer. I-64 lanes will be narrowed slightly, and the speed limit will be reduced in this work zone. Additionally, the westbound I-64 Boone Bridge over the Missouri River is undergoing routine major maintenance. Median crossovers are on both sides of the Missouri River, and two westbound I-64 lanes are on the eastbound I-64 bridge, separated by a barrier wall. The outside auxiliary lanes will be closed in each direction, but three eastbound and westbound lanes will remain open through this work, scheduled to be completed by the winter.
Southwest Missouri: Interstate 44 corridor upgrades are underway in Springfield between Kansas Expressway and U.S. Highway 65, and U.S. 65 widening is underway in Christian County. Some narrowed lanes may be present in these work zones. I-44 bridge rehabilitation work in Joplin at Missouri Routes 86/43 (Exit 6) has westbound I-44 traffic split with one lane (right) open and one lane (left) head-to-head in eastbound lanes. Both westbound and eastbound on-ramps are closed.
Southeast Missouri: Missouri Route 74 will be reduced to one lane with a 12-foot width restriction as construction crews perform maintenance on the Bill Emerson Memorial Bridge, which is located across the Mississippi River between Cape Girardeau, Missouri and East Cape Girardeau, Illinois. Work is underway and will continue through November 2025.
This article originally appeared on Columbia Daily Tribune: These Missouri highway projects are under construction this summer
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