US Bridges

SR 504 over Coldwater CR

Good

Cowlitz County, Washington · 24.0 E JCT SR 504 SP · Structure no. 0014201A0000000

Built
1994
31 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
492 ft
3 main spans
Daily traffic
585
2023 count
Owner
State
State Highway Agency

About this bridge

SR 504 over Coldwater CR is a steel continuous stringer/multi-beam or girder carrying SR 504 over Coldwater CR in Cowlitz County, Washington. It was built in 1994, so it is 31 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 585 vehicles a day, roughly 7% of them trucks, projected to reach 801 by 2039. The structure is 492 ft (150 m) long and 45 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 504
CrossesColdwater CR
Location24.0 E JCT SR 504 SP
RouteState Highway 504
CountyCowlitz County
StateWashington
Coordinates46.28907, -122.27242
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating80 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length492 ft (150 m)
Longest span191 ft (58.2 m)
Deck width45 ft (13.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic585 (2023)
Projected traffic801 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$7.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 504 over Coldwater CR built?

It was built in 1994, making it 31 years old in 2025.

What condition is SR 504 over Coldwater CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does SR 504 over Coldwater CR carry?

About 585 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR 504 over Coldwater CR?

The structure is 492 ft (150 m) long with a longest span of 191 ft (58.2 m) and a deck 45 ft wide.

Who owns SR 504 over Coldwater CR?

It is owned by the State Highway Agency.