Improvement projects will affect travel this weekend along Phoenix-area  freeways, and state transportation officials advise motorists to plan for detours and added travel time.

The Arizona Department of Transportation listed the following work from Friday night, March 14, to Monday morning, March 17:

• Eastbound US 60 will be closed overnight between Country Club and Mesa drives in the East Valley from 9 p.m. to 5 a.m. Friday, Saturday and Sunday nights for bridge maintenance.

Eastbound on-ramps will be closed at Dobson and Alma School roads. Detour: Take Southern Avenue or Baseline Road to reenter US 60 beyond the closure.   

• Westbound US 60 will be narrowed to four lanes (two left lanes closed) overnight between Mesa and Country Club drives from 9 p.m. to 5 a.m. Friday, Saturday and Sunday nights for bridge maintenance.

ADOT advises drivers to budget extra time and reduce speed in the work zone.

• Frank Lloyd Wright Boulevard will be closed under Loop 101 from 8 p.m. to 5 a.m. Friday, Saturday and Sunday nights for bridge work.

Westbound Detour: Take the northbound Loop 101 frontage road to westbound Bell Road and use the southbound frontage road. Eastbound Detour: Take the southbound frontage road to eastbound Raintree Drive and use the northbound frontage road.

• Eastbound Loop 101 will be narrowed to two lanes between Cave Creek Road and State Route 51 from 9 p.m. Friday to 5 a.m. Saturday for pavement maintenance.

The eastbound on-ramp at Cave Creek Road will be closed.

• Westbound Loop 202 will be narrowed to two lanes (right lane closed) between Val Vista Drive and Lindsay Road from 10 p.m. Friday to 5 a.m. Saturday for a barrier shift as part of a widening project.

The westbound on-ramp at Val Vista Drive will close for approximately 60 days beginning at 10 p.m. Friday. Drivers can use westbound on-ramps at Santan Village Parkway or Lindsay Road.

• The eastbound I-10 on-ramp at 32nd Street will be closed from 10 p.m. Friday to 10 p.m. Saturday for traffic-monitoring equipment installation as part of the Broadway Curve Improvement Project.

Drivers can use the I-10 on-ramp at 40th Street.