US Bridges

PINECTY-MALDN/3000 over Thorn Creek

Good

Whitman County, Washington · 8.04 MI NE SR 23 · Structure no. 086575000000000

Built
2000
25 years old
Condition
Good
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
175
2021 count
Owner
County
County Highway Agency

About this bridge

PINECTY-MALDN/3000 over Thorn Creek is a prestressed concrete tee beam carrying PINECTY-MALDN/3000 over Thorn Creek in Whitman County, Washington. It was built in 2000, so it is 25 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 175 vehicles a day, roughly 26% of them trucks, projected to reach 193 by 2044. The structure is 80 ft (24.4 m) long and 33 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesPINECTY-MALDN/3000
CrossesThorn Creek
Location8.04 MI NE SR 23
RouteCounty Highway 30000
Coordinates47.1886, -117.53153
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length80 ft (24.4 m)
Longest span78 ft (23.9 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2021)
Projected traffic193 by 2044
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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$3.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was PINECTY-MALDN/3000 over Thorn Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is PINECTY-MALDN/3000 over Thorn Creek 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 December 2023.

How much traffic does PINECTY-MALDN/3000 over Thorn Creek carry?

About 175 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is PINECTY-MALDN/3000 over Thorn Creek?

The structure is 80 ft (24.4 m) long with a longest span of 78 ft (23.9 m) and a deck 33 ft wide.

Who owns PINECTY-MALDN/3000 over Thorn Creek?

It is owned by the County Highway Agency.