I 93 /US1/ST3
I 93 /US1/ST3 in 6.6 KM S Of JCT I90&I93, Suffolk County, Massachusetts received a condition grade of C (52/100). Built in 1955, the bridge carries 194K vehicles daily on I 93 /US1/ST3 over HWY Conley ST.
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 93 /US1/ST3 is a 71-year-old bridge located 6.6 KM S Of JCT I90&I93 in Suffolk County, Massachusetts. The bridge carries I 93 /US1/ST3 over HWY Conley ST with 6 traffic lanes, handling approximately 194K vehicles per day. Built in 1955 and reconstructed in 1984, the structure spans 36 meters.
The bridge received a Condition Grade of C (52/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 6/9 (fair), and substructure 5/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I 93 /US1/ST3 has a Condition Score of 52/100 (Grade C). Its deck is rated 6/9, superstructure 6/9, and substructure 5/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 93 /US1/ST3 was built in 1955 and reconstructed in 1984, making it 71 years old. The average bridge age in the United States is 48 years.
I 93 /US1/ST3 carries approximately 194K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 36 meters long and located on I 93 /US1/ST3 in 6.6 KM S Of JCT I90&I93, Suffolk County, Massachusetts.
No, I 93 /US1/ST3 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 93 /US1/ST3 is located 6.6 KM S Of JCT I90&I93 in Suffolk County, Massachusetts. The bridge carries I 93 /US1/ST3 over HWY Conley ST. Its coordinates are 42.293256, -71.044758. It is maintained by State Highway Agency.
I 93 /US1/ST3 carries I 93 /US1/ST3 over HWY Conley ST. The bridge is 36 meters long and was built in 1955, with reconstruction in 1984.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.