INTERSTATE-91&RT15
INTERSTATE-91&RT15 in .12 MI North Of E Main ST, New Haven County, Connecticut received a condition grade of F (0/100). Built in 1964, the bridge carries 137K vehicles daily on INTERSTATE-91&RT15 over Willow Brook. It is classified as structurally deficient.
Component Ratings
The riding surface — evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
INTERSTATE-91&RT15 is a 62-year-old bridge located .12 MI North Of E Main ST in New Haven County, Connecticut. The bridge carries INTERSTATE-91&RT15 over Willow Brook with 10 traffic lanes, handling approximately 137K vehicles per day. Built in 1964, the structure spans 7 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below — this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
INTERSTATE-91&RT15 has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
INTERSTATE-91&RT15 was built in 1964, making it 62 years old. The average bridge age in the United States is 48 years.
INTERSTATE-91&RT15 carries approximately 137K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 7 meters long and located on INTERSTATE-91&RT15 in .12 MI North Of E Main ST, New Haven County, Connecticut.
Yes, INTERSTATE-91&RT15 is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
INTERSTATE-91&RT15 is located .12 MI North Of E Main ST in New Haven County, Connecticut. The bridge carries INTERSTATE-91&RT15 over Willow Brook. Its coordinates are 41.528428, -72.769764. It is maintained by State Highway Agency.
INTERSTATE-91&RT15 carries INTERSTATE-91&RT15 over Willow Brook. The bridge is 7 meters long and was built in 1964.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.