INTERSTATE 10 WB
INTERSTATE 10 WB in 08-Sbd-010-6.70-Ont, San Bernardino County, California received a condition grade of B (65/100). Built in 1966, the bridge carries 126K vehicles daily on INTERSTATE 10 WB over Cucamonga Wash.
INTERSTATE 10 WB carries a B on the BridgeSafety Condition Score with 65/100. 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 1966 and is now 60 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 WB carries an average daily traffic count of 126,000 vehicles, with 6 lane(s) crossing Cucamonga Wash. 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 WB is a 60-year-old bridge located 08-Sbd-010-6.70-Ont in San Bernardino County, California. The bridge carries INTERSTATE 10 WB over Cucamonga Wash with 6 traffic lanes, handling approximately 126K vehicles per day. Built in 1966 and reconstructed in 2022, the structure spans 29.3 meters.
The bridge received a Condition Grade of B (65/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), 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 WB has a Condition Score of 65/100 (Grade B). Its deck is rated 5/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
INTERSTATE 10 WB was built in 1966 and reconstructed in 2022, making it 60 years old. The average bridge age in the United States is 48 years.
INTERSTATE 10 WB carries approximately 126K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 29.3 meters long and located on INTERSTATE 10 WB in 08-Sbd-010-6.70-Ont, San Bernardino County, California.
No, INTERSTATE 10 WB 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 WB is located 08-Sbd-010-6.70-Ont in San Bernardino County, California. The bridge carries INTERSTATE 10 WB over Cucamonga Wash. Its coordinates are 34.068067, -117.601283. It is maintained by State Highway Agency.
INTERSTATE 10 WB carries INTERSTATE 10 WB over Cucamonga Wash. The bridge is 29.3 meters long and was built in 1966, 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.