W 4th Avenue
Carrying W 4th Avenue over Budd Inlet W. Bay & BNRR
4th Avenue, Thurston, Washington
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: W 4th Avenue
The W 4th Avenue bridge in Thurston, Washington carries W 4th Avenue over Budd Inlet W. Bay & BNRR. It was built in 2004, making it 22 years old today. The structure is built primarily of prestressed concrete continuous and spans 6 sections, stretching 228.3 meters (749 feet) end to end. Daily traffic averages 20,060 vehicles, placing it in the heavily-trafficked tier of Washington 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 7/9, substructure at 8/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 58.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How W 4th Avenue compares
Live comparison across Washington.
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 How the historical reference is calculated.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
- 2004
- Material
- Prestressed Concrete Continuous
- Number of Spans
- 6
- Structure Length
- 228.3 m (749 ft)
- Deck Width
- 20.1 m (66 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 20,060 vehicles/day
- Structure Number
- 087279000000000
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) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in good condition (8/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether W 4th Avenue 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 W 4th Avenue against other structures in Thurston and across Washington. Washington 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 W 4th Avenue?
W 4th Avenue in Thurston, Washington has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is W 4th Avenue inspected?
W 4th Avenue'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 20,060 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. W 4th Avenue is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for W 4th Avenue?
W 4th Avenue has an NBI inventory load rating of 58.0 metric tons.
Who is responsible for maintaining W 4th Avenue?
W 4th Avenue is owned and maintained by City/Municipal Highway Agency.
How old is W 4th Avenue and does age affect safety?
W 4th Avenue was built in 2004, making it 22 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.