SPILLWAY BRIDGE
Carrying SPILLWAY BRIDGE over SPILLWAY CHANNEL
LOWER GRANITE DAM, Garfield, Washington
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: SPILLWAY BRIDGE
The SPILLWAY BRIDGE bridge in Garfield, Washington carries SPILLWAY BRIDGE over SPILLWAY CHANNEL. It was built in 1968, making it 58 years old today. The structure is built primarily of prestressed concrete and spans 8 sections, stretching 156.0 meters (512 feet) end to end. Daily traffic averages 150 vehicles, placing it in the lower-traffic tier of Washington bridges. It is owned and maintained by Army Corps of Engineers.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 57.3 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How SPILLWAY BRIDGE 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 How the historical reference is calculated.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
- 1968
- Material
- Prestressed Concrete
- Number of Spans
- 8
- Structure Length
- 156.0 m (512 ft)
- Deck Width
- 10.9 m (36 ft)
- Owner
- Army Corps of Engineers
- Avg Daily Traffic
- 150 vehicles/day
- Structure Number
- CEPNPWWA0LGRSPY
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether SPILLWAY BRIDGE 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 SPILLWAY BRIDGE against other structures in Garfield 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 SPILLWAY BRIDGE?
SPILLWAY BRIDGE in Garfield, Washington has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is SPILLWAY BRIDGE inspected?
SPILLWAY BRIDGE'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 150 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SPILLWAY BRIDGE 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 SPILLWAY BRIDGE?
SPILLWAY BRIDGE has an NBI inventory load rating of 57.3 metric tons.
Who is responsible for maintaining SPILLWAY BRIDGE?
SPILLWAY BRIDGE is owned and maintained by Army Corps of Engineers.
How old is SPILLWAY BRIDGE and does age affect safety?
SPILLWAY BRIDGE was built in 1968, making it 58 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.