US Bridges

First Street over South Fork Pine Creek

Fair

Whitman County, Washington · 0.10 MI S Washington ST · Structure no. 085767000000000

Built
1918
107 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
36 ft
1 main span
Daily traffic
20
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

First Street over South Fork Pine Creek is a concrete culvert carrying First Street over South Fork Pine Creek in Whitman County, Washington. It was built in 1918, so it is 107 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 20 vehicles a day, roughly 30% of them trucks, projected to reach 21 by 2044. The structure is 36 ft (11 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFirst Street
CrossesSouth Fork Pine Creek
Location0.10 MI S Washington ST
RouteCity Street 440
Coordinates47.08782, -117.04728
Functional classUrban Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; extensive scour has occurred
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating28 US tons
Inventory rating17 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length36 ft (11 m)
Longest span27 ft (8.2 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic21 by 2044
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$300,000
NavigationNo navigation control on waterway

Frequently asked questions

When was First Street over South Fork Pine Creek built?

It was built in 1918, making it 107 years old in 2025.

What condition is First Street 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 January 2025.

How much traffic does First Street over South Fork Pine Creek carry?

About 20 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is First Street over South Fork Pine Creek?

The structure is 36 ft (11 m) long with a longest span of 27 ft (8.2 m) and a deck 28 ft wide.

Who owns First Street over South Fork Pine Creek?

It is owned by the City or Municipal Highway Agency.