US HIGHWAY 101
US HIGHWAY 101 in 04-Son-101-20.74-Sro, Sonoma County, California received a condition grade of B (74/100). Built in 2009, the bridge carries 137K vehicles daily on US HIGHWAY 101 over College Avenue.
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
US HIGHWAY 101 is a 17-year-old bridge located 04-Son-101-20.74-Sro in Sonoma County, California. The bridge carries US HIGHWAY 101 over College Avenue with 6 traffic lanes, handling approximately 137K vehicles per day. Built in 2009, the structure spans 58.8 meters.
The bridge received a Condition Grade of B (74/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 8/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
US HIGHWAY 101 has a Condition Score of 74/100 (Grade B). Its deck is rated 5/9, superstructure 8/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
US HIGHWAY 101 was built in 2009, making it 17 years old. The average bridge age in the United States is 48 years.
US HIGHWAY 101 carries approximately 137K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 58.8 meters long and located on US HIGHWAY 101 in 04-Son-101-20.74-Sro, Sonoma County, California.
No, US HIGHWAY 101 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
US HIGHWAY 101 is located 04-Son-101-20.74-Sro in Sonoma County, California. The bridge carries US HIGHWAY 101 over College Avenue. Its coordinates are 38.445581, -122.723592. It is maintained by State Highway Agency.
US HIGHWAY 101 carries US HIGHWAY 101 over College Avenue. The bridge is 58.8 meters long and was built in 2009.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.