US Bridges

2nd Street over Slough

FairPosted for load

Pacific County, Washington · 2.39 W JCT SR 101 · Structure no. 080709000000000

Built
1981
44 years old
Condition
Fair
inspected June 2024
Type
Slab
Prestressed Concrete
Length
290 ft
10 main spans
Daily traffic
457
2023 count
Owner
County
County Highway Agency

About this bridge

2nd Street over Slough is a prestressed concrete slab carrying 2nd Street over Slough in Pacific County, Washington. It was built in 1981, so it is 44 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 457 vehicles a day, roughly 5% of them trucks, projected to reach 800 by 2043. The structure is 290 ft (88.4 m) long and 37 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Carries2nd Street
CrossesSlough
Location2.39 W JCT SR 101
RouteCounty Highway 41270
Coordinates46.62911, -123.95328
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating44.3 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans10
Design loadHS 20
Structure length290 ft (88.4 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.3 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic457 (2023)
Projected traffic800 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$4.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 2nd Street over Slough built?

It was built in 1981, making it 44 years old in 2025.

What condition is 2nd Street over Slough 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 June 2024.

How much traffic does 2nd Street over Slough carry?

About 457 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 2nd Street over Slough?

The structure is 290 ft (88.4 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns 2nd Street over Slough?

It is owned by the County Highway Agency.