RELIEZ STATION RD
Carrying RELIEZ STATION RD over LAS TRAMPAS CREEK
0.1 MI N OLYMPIC BLVD, Contra Costa, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: RELIEZ STATION RD
The RELIEZ STATION RD bridge in Contra Costa, California carries RELIEZ STATION RD over LAS TRAMPAS CREEK. It was built in 1937, making it 89 years old today. It was last reconstructed in 1955, extending its service life. The structure is built primarily of steel continuous and spans 3 sections, stretching 27.4 meters (90 feet) end to end. Daily traffic averages 900 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, substructure at 5/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 25.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How RELIEZ STATION RD 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 How the historical reference is calculated.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
- 1937
- Last Reconstructed
- 1955
- Material
- Steel Continuous
- Number of Spans
- 3
- Structure Length
- 27.4 m (90 ft)
- Deck Width
- 7.9 m (26 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 900 vehicles/day
- Structure Number
- 28C0420
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
This page shows what the last federal inspection recorded, not whether RELIEZ STATION RD 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 RELIEZ STATION RD against other structures in Contra Costa 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 RELIEZ STATION RD?
RELIEZ STATION RD in Contra Costa, California has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is RELIEZ STATION RD inspected?
RELIEZ STATION RD'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 900 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. RELIEZ STATION RD 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 RELIEZ STATION RD?
RELIEZ STATION RD has an NBI inventory load rating of 25.6 metric tons.
Who is responsible for maintaining RELIEZ STATION RD?
RELIEZ STATION RD is owned and maintained by City/Municipal Highway Agency.
How old is RELIEZ STATION RD and does age affect safety?
RELIEZ STATION RD was built in 1937, making it 89 years old and last reconstructed in 1955.
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.