US Bridges

VIOLA/5190 over Four Mile Creek

FairPosted for load

Whitman County, Washington · 1.79 MI NE SR 27 · Structure no. 083370000000000

Built
1976
49 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
102
2020 count
Owner
County
County Highway Agency

About this bridge

VIOLA/5190 over Four Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying VIOLA/5190 over Four Mile Creek in Whitman County, Washington. It was built in 1976, so it is 49 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 102 vehicles a day, roughly 25% of them trucks, projected to reach 104 by 2039. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesVIOLA/5190
CrossesFour Mile Creek
Location1.79 MI NE SR 27
RouteCounty Highway 51900
Coordinates46.84642, -117.08838
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating31.1 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102 (2020)
Projected traffic104 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was VIOLA/5190 over Four Mile Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is VIOLA/5190 over Four Mile 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 December 2024.

How much traffic does VIOLA/5190 over Four Mile Creek carry?

About 102 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is VIOLA/5190 over Four Mile Creek?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns VIOLA/5190 over Four Mile Creek?

It is owned by the County Highway Agency.