The I-90 on-ramp at Newbury Street / Mass Ave will continue to be closed some overnights to enable work on the Turnpike.
Timing: between 11:00 p.m. and 5:00 a.m. on 12/16 and 12/17
Detour: A signed detour will be posted for drivers to access the Turnpike westbound via the Arlington Street / Marginal Road on-ramp in the Back Bay, via Commonwealth Avenue and Arlington Street (as shown below).
Map depicting signed detour routes for drivers who are bound towards I-90 westbound from north or south: signs will direct drivers to Commonwealth Avenue, then to Arlington Street, to access the westbound on-ramp at Arlington Street / Marginal Road.