US Bridges

MCGREEVY/5370 over Missouri Flat Creek

FairPosted for load

Whitman County, Washington · 0.05 MI N Whelan · Structure no. 081822000000000

Built
1978
47 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

MCGREEVY/5370 over Missouri Flat Creek is a prestressed concrete stringer/multi-beam or girder carrying MCGREEVY/5370 over Missouri Flat Creek in Whitman County, Washington. It was built in 1978, so it is 47 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 50 vehicles a day, roughly 25% of them trucks, projected to reach 51 by 2039. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesMCGREEVY/5370
CrossesMissouri Flat Creek
Location0.05 MI N Whelan
RouteCounty Highway 53700
CountyWhitman County
StateWashington
Coordinates46.77955, -117.12068
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
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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic51 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was MCGREEVY/5370 over Missouri Flat Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is MCGREEVY/5370 over Missouri Flat 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 MCGREEVY/5370 over Missouri Flat Creek carry?

About 50 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is MCGREEVY/5370 over Missouri Flat Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.7 m) and a deck 24 ft wide.

Who owns MCGREEVY/5370 over Missouri Flat Creek?

It is owned by the County Highway Agency.