GONZALES — Ascension Parish residents have lobbied many years for more improvements to the major highways running through the parish, and now they’re getting a full dose.

Inspections or work on three state highways are expected to spur road closures in the parish over the next week, starting early Friday on La. 42, state highway officials said.

A single lane of two-lane La. 42 will be closed at the Muddy Creek bridge from 1 a.m. to 5 a.m. Friday as part of a $27.5 million project begun late last year to widen nearly four miles of the highway in Prairieville to four and five lanes, officials said.

Workers will be pouring the concrete foundation for new box culverts to replace the existing bridge over the creek west of La. 930, state Department of Transportation and Development officials said in a statement. Flagging crews will be working to direct traffic during the closure.

Any oversized loads wider than 11 feet across won’t be allowed through the closure.

Starting Sunday night on Interstate 10, three overnight single lane closures are planned on that highway’s westbound side between La. 73 in Prairieville and Highland Road in East Baton Rouge Parish.

Part of a $72 million project, DOTD contractors are widening that section of I-10 from four to six lanes. Crews will be setting up temporary concrete barriers during the closures.

The closures on I-10 are planned 7 p.m. Sunday to 9 a.m. Monday; 7 p.m. Monday to 5 a.m. Tuesday; and 8 p.m. Tuesday to 5 a.m. Wednesday.

Then, the outside lane of Airline Highway southbound will be closed around the Bayou Manchac bridge on Thursday, March 15, from 9 a.m. to noon.

DOTD crews will be inspecting the bridge at the parish line between Ascension and East Baton Rouge.

During that closure, vehicles wider than 11-feet across won’t be able to pass and must detour to La. 42 west, the to I-10 east, and then to LA 427 east.

Follow David J. Mitchell on Twitter, @NewsieDave.