When the I-691 WB (Exit 1B) off-ramp to I-91 SB is closed, the detour route is as follows:
- Continue on I-691 EB
- Take Exit 2A to Route 5/Broad Street
- Turn left onto Route 5/Broad Street
- Take on ramp to I-691 EB
- Take Exit to Route 15 SB
- Merge onto I-91 SB
