I 495 SB
I 495 SB in 0.7 MI No Rt 110, Middlesex County, Massachusetts received a condition grade of B (62/100). Built in 1959, the bridge carries 129K vehicles daily on I 495 SB over Water River Meadow Brook.
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 495 SB is a 67-year-old bridge located 0.7 MI No Rt 110 in Middlesex County, Massachusetts. The bridge carries I 495 SB over Water River Meadow Brook with 5 traffic lanes, handling approximately 129K vehicles per day. Built in 1959 and reconstructed in 1975, the structure spans 13.4 meters.
The bridge received a Condition Grade of B (62/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 7/9 (good), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I 495 SB has a Condition Score of 62/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 495 SB was built in 1959 and reconstructed in 1975, making it 67 years old. The average bridge age in the United States is 48 years.
I 495 SB carries approximately 129K vehicles per day (average daily traffic). The bridge has 5 traffic lanes. It is 13.4 meters long and located on I 495 SB in 0.7 MI No Rt 110, Middlesex County, Massachusetts.
No, I 495 SB 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 495 SB is located 0.7 MI No Rt 110 in Middlesex County, Massachusetts. The bridge carries I 495 SB over Water River Meadow Brook. Its coordinates are 42.607103, -71.332586. It is maintained by State Highway Agency.
I 495 SB carries I 495 SB over Water River Meadow Brook. The bridge is 13.4 meters long and was built in 1959, with reconstruction in 1975.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.