O&M Service Roads
Carrying O&M Service Roads over All-American Canal
8.3 miles north of Yuma, Imperial, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: O&M Service Roads
The O&M Service Roads bridge in Imperial, California carries O&M Service Roads over All-American Canal. It was built in 1960, making it 66 years old today. The structure is built primarily of concrete and spans 7 sections, stretching 61.0 meters (200 feet) end to end. Daily traffic averages 50 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by Bureau of Reclamation.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 6/9, substructure at 7/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 18.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How O&M Service Roads compares
Live comparison across California.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1960
- Material
- Concrete
- Number of Spans
- 7
- Structure Length
- 61.0 m (200 ft)
- Deck Width
- 4.5 m (15 ft)
- Owner
- Bureau of Reclamation
- Avg Daily Traffic
- 50 vehicles/day
- Structure Number
- 0304-0055
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
This page shows what the last federal inspection recorded, not whether O&M Service Roads is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare O&M Service Roads against other structures in Imperial and across California. California bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for O&M Service Roads?
O&M Service Roads in Imperial, California has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is O&M Service Roads inspected?
O&M Service Roads's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 50 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. O&M Service Roads is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for O&M Service Roads?
O&M Service Roads has an NBI inventory load rating of 18.8 metric tons.
Who is responsible for maintaining O&M Service Roads?
O&M Service Roads is owned and maintained by Bureau of Reclamation.
How old is O&M Service Roads and does age affect safety?
O&M Service Roads was built in 1960, making it 66 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.