IS 495
IS 495 in On Virginia Line, Montgomery County, Maryland received a condition grade of C (53/100). Built in 1963, the bridge carries 239K vehicles daily on IS 495 over Potomac 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
IS 495 is a 63-year-old bridge located On Virginia Line in Montgomery County, Maryland. The bridge carries IS 495 over Potomac River with 10 traffic lanes, handling approximately 239K vehicles per day. Built in 1963 and reconstructed in 1986, the structure spans 439.8 meters.
The bridge received a Condition Grade of C (53/100) 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
IS 495 has a Condition Score of 53/100 (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.
IS 495 was built in 1963 and reconstructed in 1986, making it 63 years old. The average bridge age in the United States is 48 years.
IS 495 carries approximately 239K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 439.8 meters long and located on IS 495 in On Virginia Line, Montgomery County, Maryland.
No, IS 495 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
IS 495 is located On Virginia Line in Montgomery County, Maryland. The bridge carries IS 495 over Potomac River. Its coordinates are 38.971144, -77.179478. It is maintained by State Highway Agency.
IS 495 carries IS 495 over Potomac River. The bridge is 439.8 meters long and was built in 1963, with reconstruction in 1986.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.