Franklin Boulevard will be closed at night, starting Monday, near the University of Oregon campus to build a 14-foot wide sky bridge that's 190 feet long and weighs 500 tons. Here's what you need to know about the closure:

What: Crews will be building a sky bridge connecting the Knight Campus — formally known as the Phil and Penny Knight Campus for Accelerating Scientific Impact, which also is under construction — to the Lewis Integrative Science Building at the University of Oregon. The sky bridge is scheduled to be structurally complete by Labor Day but won’t open until the Knight Campus opens in late spring of 2020.

Where: Franklin Boulevard between Onyx and Agate streets.

When: Closure will start at 9 p.m. through 5 a.m. nightly. Closure and construction starts Monday evening. Work is expected to continue each evening until Labor Day. Franklin Boulevard will be reduced to one lane at 9 p.m. each evening and then Franklin will be closed entirely from 10 p.m. until 5 a.m.

Detour: Drivers can get around the area using marked detours. The detours will be on Agate Street, East 18th Avenue and on Patterson and Hilyard streets. EmX buses and emergency vehicles are expected to pass through without being re-routed.

Avoid the detour: If traveling to the east side of Franklin from north Eugene or Springfield, consider taking Interstate 5 south to Exit 191, the Glenwood exit, take Glenwood to Franklin/OR-126W. If traveling to south Eugene, consider I-5 south to exit 189 to East 30th Avenue.