US Bridges

SEABURY/0150 over South Fork Pine Creek

Fair

Whitman County, Washington · 2.50 MI NW SR 27 · Structure no. 084872000000000

Built
1967
58 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
124
2022 count
Owner
County
County Highway Agency

About this bridge

SEABURY/0150 over South Fork Pine Creek is a prestressed concrete tee beam carrying SEABURY/0150 over South Fork Pine Creek in Whitman County, Washington. It was built in 1967, so it is 58 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 6 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 124 vehicles a day, roughly 11% of them trucks, projected to reach 137 by 2044. The structure is 61 ft (18.7 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesSEABURY/0150
CrossesSouth Fork Pine Creek
Location2.50 MI NW SR 27
RouteCounty Highway 1500
Coordinates47.19253, -117.20517
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length61 ft (18.7 m)
Longest span59 ft (18.1 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic124 (2022)
Projected traffic137 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SEABURY/0150 over South Fork Pine Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is SEABURY/0150 over South Fork Pine 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 November 2023.

How much traffic does SEABURY/0150 over South Fork Pine Creek carry?

About 124 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is SEABURY/0150 over South Fork Pine Creek?

The structure is 61 ft (18.7 m) long with a longest span of 59 ft (18.1 m) and a deck 28 ft wide.

Who owns SEABURY/0150 over South Fork Pine Creek?

It is owned by the County Highway Agency.