US Bridges

Main Street over Pleasant Valley Creek

Fair

Whitman County, Washington · 0.10 S SR 23 · Structure no. 084999000000000

Built
1966
59 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
150
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main Street over Pleasant Valley Creek is a prestressed concrete tee beam carrying Main Street over Pleasant Valley Creek in Whitman County, Washington. It was built in 1966, so it is 59 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 153 by 2044. The structure is 41 ft (12.5 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMain Street
CrossesPleasant Valley Creek
Location0.10 S SR 23
RouteCity Street 11353
Coordinates47.09085, -117.57943
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be 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 typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span39 ft (11.9 m)
Deck width28 ft (8.5 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic153 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$487,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Main Street over Pleasant Valley Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Main Street over Pleasant Valley 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 2024.

How much traffic does Main Street over Pleasant Valley Creek carry?

About 150 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Main Street over Pleasant Valley Creek?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 28 ft wide.

Who owns Main Street over Pleasant Valley Creek?

It is owned by the City or Municipal Highway Agency.