US Bridges

South Toutle RD over Outlet Creek

Fair

Cowlitz County, Washington · 0.21 SE SR 504 (mp 10.54) · Structure no. 087286000000000

Built
1950
75 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
1,388
2019 count
Owner
County
County Highway Agency

About this bridge

South Toutle RD over Outlet Creek is a concrete continuous culvert carrying South Toutle RD over Outlet Creek in Cowlitz County, Washington. It was built in 1950, so it is 75 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,388 vehicles a day, roughly 7% of them trucks, projected to reach 1,875 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSouth Toutle RD
CrossesOutlet Creek
Location0.21 SE SR 504 (mp 10.54)
RouteCounty Highway 51700
CountyCowlitz County
StateWashington
Coordinates46.32306, -122.72889
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 15
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,388 (2019)
Projected traffic1,875 by 2040
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$399,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was South Toutle RD over Outlet Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is South Toutle RD over Outlet Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does South Toutle RD over Outlet Creek carry?

About 1,388 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is South Toutle RD over Outlet Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns South Toutle RD over Outlet Creek?

It is owned by the County Highway Agency.