I 91
I 91 in JCT City Garage & Bmrr, Hampden County, Massachusetts received a condition grade of B (68/100). Built in 1971, the bridge carries 143K vehicles daily on I 91 over Comb Sts/Csx/Gwrr/Garag.
I 91 carries a B on the BridgeSafety Condition Score with 68/100. 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 143,144 vehicles, with 6 lane(s) crossing Comb Sts/Csx/Gwrr/Garag. 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 City Garage & Bmrr in Hampden County, Massachusetts. The bridge carries I 91 over Comb Sts/Csx/Gwrr/Garag with 6 traffic lanes, handling approximately 143K vehicles per day. Built in 1971 and reconstructed in 2019, the structure spans 460.9 meters.
The bridge received a Condition Grade of B (68/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 5/9 (fair), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I 91 has a Condition Score of 68/100 (Grade B). Its deck is rated 7/9, superstructure 5/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 91 was built in 1971 and reconstructed in 2019, making it 55 years old. The average bridge age in the United States is 48 years.
I 91 carries approximately 143K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 460.9 meters long and located on I 91 in JCT City Garage & Bmrr, 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 City Garage & Bmrr in Hampden County, Massachusetts. The bridge carries I 91 over Comb Sts/Csx/Gwrr/Garag. Its coordinates are 42.103497, -72.597022. It is maintained by State Highway Agency.
I 91 carries I 91 over Comb Sts/Csx/Gwrr/Garag. The bridge is 460.9 meters long and was built in 1971, with reconstruction in 2019.
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.