US Bridges

Bishop Blvd over S Fork Palouse River

GoodPosted for load

Whitman County, Washington · 0.3 S JCT SR 270 · Structure no. 085938000000000

Built
1992
33 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
15,937
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bishop Blvd over S Fork Palouse River is a prestressed concrete stringer/multi-beam or girder carrying Bishop Blvd over S Fork Palouse River in Whitman County, Washington. It was built in 1992, so it is 33 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. Its operating status is: posted for load restriction.

It carries about 15,937 vehicles a day, roughly 5% of them trucks, projected to reach 31,000 by 2042. The structure is 90 ft (27.4 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBishop Blvd
CrossesS Fork Palouse River
Location0.3 S JCT SR 270
RouteCity Street 7422
Coordinates46.71833, -117.16333
Functional classUrban Minor Arterial

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating20.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span88 ft (26.9 m)
Deck width58 ft (17.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,937 (2022)
Projected traffic31,000 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bishop Blvd over S Fork Palouse River built?

It was built in 1992, making it 33 years old in 2025.

What condition is Bishop Blvd over S Fork Palouse River 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 October 2024.

How much traffic does Bishop Blvd over S Fork Palouse River carry?

About 15,937 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Bishop Blvd over S Fork Palouse River?

The structure is 90 ft (27.4 m) long with a longest span of 88 ft (26.9 m) and a deck 58 ft wide.

Who owns Bishop Blvd over S Fork Palouse River?

It is owned by the City or Municipal Highway Agency.