Officials with the Iowa Department of Transportation say travel during the upcoming Memorial Day holiday may be slowed by road construction. Several projects on Iowa’s interstate and state roadways may warrant advance planning on the part of drivers.

Projects in Southwest Iowa include:

• A bridge deck overlay on U.S. 30 west of Missouri Valley in Harrison County has reduced the roadway to one lane. Traffic is being maintained with temporary traffic signals. The open lane has an 11-foot width restriction.
• Staged bridge construction on U.S. 30 northeast of Woodbine in Harrison County has reduced the roadway to one lane. Traffic is being maintained with temporary traffic signals.
• Bridge construction on I-80 over the West Nishnabotna River near Avoca in Pottawattamie County has closed the westbound lanes between mileposts 34 and 40. Traffic has been shifted to a two-lane, two-way pattern in the eastbound lanes.
• Bridge construction has closed northbound I-29 in Fremont County between mileposts 21 and 25. Traffic has been shifted to a two-lane, two-way traffic pattern in the southbound lanes. 
• Asphalt resurfacing in the northbound lanes of I-29 in Fremont County from milepost 10 to 17 has traffic shifted to a two-lane, two-way traffic pattern in the southbound lanes. 
• Bridge deck overlays at two locations on U.S. 71 south of Atlantic in Cass County have reduced the roadway to one lane. Traffic is being maintained with temporary traffic signals. 
• A new bridge deck is being placed on the eastbound I-80 Wiota interchange bridge at milepost 64 and a new bridge over Crooked Creek is being built at milepost 69 in Cass County. Traffic is shifted to a two-lane, two-way traffic pattern in the westbound lanes from milepost 60 to 70. The eastbound ramps at Wiota are closed and a detour is in place for Cass County Road N-28.

Iowa 148 between Massena and Anita in Cass County is closed for highway repair work. Traffic should follow the marked detour.

There are many other ongoing construction and maintenance projects affecting traffic on state, county and local road systems. Details of all current Iowa DOT construction projects can be found at www.511ia.org.