ODOT crews will close the St. Johns Bridge to motor vehicles for up to 21 nights, but the bridge will remain open to bicyclists and pedestrians who wait for flaggers to wave them safely across.

The bridge will close from 9 p.m. to 5 a.m. each night, seven days a week, starting Sunday July 28 and ending Sunday Aug. 18 while crews re-tension the bridge cables.

During the closures, orange cones will mark a bike path across the 82-year-old bridge. Flaggers at both ends of the bridge will hold up bicyclists and pedestrians until a break in the work allows a safe crossing through the active work zone. Bridge workers will be notified when bicyclists and pedestrians are on the bridge and when they have safely crossed.

Flaggers will detain people for no longer than 10 minutes unless conditions prevent safe passage.

The cables on the St. Johns Bridge equally distribute the weight of the bridge and the weight of vehicles using it. Over time, the cables become stretched and loose and need to be re-tensioned to specifications. Then work involves the use of heavy equipment on the bridge including cranes and scaffolding.

During the closure, eastbound motorized vehicles may take U.S. 30 to Interstate 405 across the Fremont Bridge to northbound Interstate-5 to the Northeast Lombard Street off-ramp, exit 305A or exit 305B. Westbound motorists may take I-5 south to I-405 and Fremont Bridge/U.S. 30 westbound, exit 302B.

Work crews will clear a path as needed for emergency service vehicles.