INTERSTATE 10
INTERSTATE 10 in 08-Sbd-010-1.75-Mcl, San Bernardino County, California received a condition grade of B (66/100). Built in 1953, the bridge carries 219K vehicles daily on INTERSTATE 10 over Benson Avenue.
INTERSTATE 10 carries a B on the BridgeSafety Condition Score with 66/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 1953 and is now 73 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. INTERSTATE 10 carries an average daily traffic count of 219,000 vehicles, with 14 lane(s) crossing Benson Avenue. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
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
INTERSTATE 10 is a 73-year-old bridge located 08-Sbd-010-1.75-Mcl in San Bernardino County, California. The bridge carries INTERSTATE 10 over Benson Avenue with 14 traffic lanes, handling approximately 219K vehicles per day. Built in 1953 and reconstructed in 2022, the structure spans 21.6 meters.
The bridge received a Condition Grade of B (66/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
INTERSTATE 10 has a Condition Score of 66/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
INTERSTATE 10 was built in 1953 and reconstructed in 2022, making it 73 years old. The average bridge age in the United States is 48 years.
INTERSTATE 10 carries approximately 219K vehicles per day (average daily traffic). The bridge has 14 traffic lanes. It is 21.6 meters long and located on INTERSTATE 10 in 08-Sbd-010-1.75-Mcl, San Bernardino County, California.
No, INTERSTATE 10 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
INTERSTATE 10 is located 08-Sbd-010-1.75-Mcl in San Bernardino County, California. The bridge carries INTERSTATE 10 over Benson Avenue. Its coordinates are 34.087006, -117.681025. It is maintained by State Highway Agency.
INTERSTATE 10 carries INTERSTATE 10 over Benson Avenue. The bridge is 21.6 meters long and was built in 1953, with reconstruction in 2022.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.