INTERSTATE-95
INTERSTATE-95 in Interstate-95 Exit No 21, Fairfield County, Connecticut received a condition grade of C (54/100). Built in 1958, the bridge carries 130K vehicles daily on INTERSTATE-95 over Mill Plain Road. It is classified as structurally deficient.
INTERSTATE-95 carries a C on the BridgeSafety Condition Score with 54/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1958 and is now 68 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. INTERSTATE-95 carries an average daily traffic count of 130,300 vehicles, with 7 lane(s) crossing Mill Plain Road. 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
INTERSTATE-95 is a 68-year-old bridge located Interstate-95 Exit No 21 in Fairfield County, Connecticut. The bridge carries INTERSTATE-95 over Mill Plain Road with 7 traffic lanes, handling approximately 130K vehicles per day. Built in 1958, the structure spans 23.5 meters.
The bridge received a Condition Grade of C (54/100) based on Federal Highway Administration inspection data. Its deck is rated 4/9 (poor), superstructure 7/9 (good), and substructure 6/9 (fair). 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-95 has a Condition Score of 54/100 (Grade C). Its deck is rated 4/9, superstructure 7/9, and substructure 6/9 on the NBI scale. The bridge is classified as structurally deficient.
INTERSTATE-95 was built in 1958, making it 68 years old. The average bridge age in the United States is 48 years.
INTERSTATE-95 carries approximately 130K vehicles per day (average daily traffic). The bridge has 7 traffic lanes. It is 23.5 meters long and located on INTERSTATE-95 in Interstate-95 Exit No 21, Fairfield County, Connecticut.
Yes, INTERSTATE-95 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-95 is located Interstate-95 Exit No 21 in Fairfield County, Connecticut. The bridge carries INTERSTATE-95 over Mill Plain Road. Its coordinates are 41.144111, -73.265356. It is maintained by State Highway Agency.
INTERSTATE-95 carries INTERSTATE-95 over Mill Plain Road. The bridge is 23.5 meters long and was built in 1958.
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.