RED WILLOW RD
Carrying RED WILLOW RD over WEST BRANCH ALAMO CREEK
0.1 MI SE DOUGHERTY RD, Contra Costa, California
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
RED WILLOW RD in Contra Costa, California is rated Fair in the FHWA's 2024 National Bridge Inventory.
Built in 1990, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. The lowest applicable rating sets the federal condition category, so this Fair result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure CA:28C0452
LATE-CENTURY · TIMBER · MULTI-SPAN · SUPER-LED · LOCAL-ADT · STANDARD-LOAD · CAT-FAIR
- LATE-CENTURY 1980–1999
- TIMBER Wood or timber
- MULTI-SPAN 3 spans
- SUPER-LED Superstructure-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-FAIR Fair
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: RED WILLOW RD
The RED WILLOW RD bridge in Contra Costa, California carries RED WILLOW RD over WEST BRANCH ALAMO CREEK. It was built in 1990, making it 36 years old today. The structure is built primarily of wood or timber and spans 3 sections, stretching 36.6 meters (120 feet) end to end. Daily traffic averages 400 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 7/9, superstructure at 6/9, substructure at 7/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How RED WILLOW RD compares
Age against the county: built in 1990, earlier than 188 of Contra Costa's 618 bridges with a recorded construction year (30%), against a county median build year of 1971. This is one of the newer structures in its county.
Live comparison across California bridges with a recorded inventory load rating (25,538 of 25,848 rated).
RED WILLOW RD vs every rated California bridge
Inventory load rating (metric tons), FHWA NBI, this state
31 Top 66% higher than 34% of 25,538 bridges
rated California bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Contra Costa inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 618 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1990
- Material
- Wood or Timber
- Number of Spans
- 3
- Structure Length
- 36.6 m (120 ft)
- Deck Width
- 9.5 m (31 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 400 vehicles/day
- Structure Number
- 28C0452
Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether RED WILLOW 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 RED WILLOW 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 RED WILLOW RD?
RED WILLOW RD in Contra Costa, 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 RED WILLOW RD inspected?
RED WILLOW 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 400 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. RED WILLOW 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 RED WILLOW RD?
RED WILLOW RD has an NBI inventory load rating of 30.8 metric tons.
Who is responsible for maintaining RED WILLOW RD?
RED WILLOW RD is owned and maintained by City/Municipal Highway Agency.
How old is RED WILLOW RD and does age affect safety?
RED WILLOW RD was built in 1990, making it 36 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.