I 91
I 91 in JCT Various City Streets, Hampden County, Massachusetts received a condition grade of B (64/100). Built in 1971, the bridge carries 126K vehicles daily on I 91 over HWY City Sts&Garage.
I 91 carries a B on the BridgeSafety Condition Score with 64/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 1971 and is now 55 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. I 91 carries an average daily traffic count of 125,740 vehicles, with 6 lane(s) crossing HWY City Sts&Garage. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
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
I 91 is a 55-year-old bridge located JCT Various City Streets in Hampden County, Massachusetts. The bridge carries I 91 over HWY City Sts&Garage with 6 traffic lanes, handling approximately 126K vehicles per day. Built in 1971 and reconstructed in 2017, the structure spans 598.8 meters.
The bridge received a Condition Grade of B (64/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 5/9 (fair), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I 91 has a Condition Score of 64/100 (Grade B). Its deck is rated 7/9, superstructure 5/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 91 was built in 1971 and reconstructed in 2017, making it 55 years old. The average bridge age in the United States is 48 years.
I 91 carries approximately 126K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 598.8 meters long and located on I 91 in JCT Various City Streets, Hampden County, Massachusetts.
No, I 91 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I 91 is located JCT Various City Streets in Hampden County, Massachusetts. The bridge carries I 91 over HWY City Sts&Garage. Its coordinates are 42.102517, -72.594669. It is maintained by State Highway Agency.
I 91 carries I 91 over HWY City Sts&Garage. The bridge is 598.8 meters long and was built in 1971, with reconstruction in 2017.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.