I 93 /US1/ST3
I 93 /US1/ST3 in .8 KM S Of JCT SR 3a, Suffolk County, Massachusetts received a condition grade of C (48/100). Built in 1954, the bridge carries 170K vehicles daily on I 93 /US1/ST3 over Water Neponset River.
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 72-year-old bridge located .8 KM S Of JCT SR 3a in Suffolk County, Massachusetts. The bridge carries I 93 /US1/ST3 over Water Neponset River with 8 traffic lanes, handling approximately 170K vehicles per day. Built in 1954 and reconstructed in 1984, the structure spans 145.7 meters.
The bridge received a Condition Grade of C (48/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 5/9 (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 48/100 (Grade C). Its deck is rated 6/9, superstructure 5/9, and substructure 5/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 93 /US1/ST3 was built in 1954 and reconstructed in 1984, making it 72 years old. The average bridge age in the United States is 48 years.
I 93 /US1/ST3 carries approximately 170K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 145.7 meters long and located on I 93 /US1/ST3 in .8 KM S Of JCT SR 3a, 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 .8 KM S Of JCT SR 3a in Suffolk County, Massachusetts. The bridge carries I 93 /US1/ST3 over Water Neponset River. Its coordinates are 42.277783, -71.048400. It is maintained by State Highway Agency.
I 93 /US1/ST3 carries I 93 /US1/ST3 over Water Neponset River. The bridge is 145.7 meters long and was built in 1954, 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.