US Bridges

ODONNELL/5570 over Missouri Flat Creek

FairPosted for load

Whitman County, Washington · 0.98 MI NE Pullman Airprt · Structure no. 083213000000000

Built
1976
49 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
84
2020 count
Owner
County
County Highway Agency

About this bridge

ODONNELL/5570 over Missouri Flat Creek is a prestressed concrete stringer/multi-beam or girder carrying ODONNELL/5570 over Missouri Flat 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 84 vehicles a day, roughly 25% of them trucks, projected to reach 86 by 2039. The structure is 24 ft (7.3 m) long and 28 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

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CarriesODONNELL/5570
CrossesMissouri Flat Creek
Location0.98 MI NE Pullman Airprt
RouteCounty Highway 55700
CountyWhitman County
StateWashington
Coordinates46.76528, -117.07358
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
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.8 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (6.9 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic84 (2020)
Projected traffic86 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ODONNELL/5570 over Missouri Flat Creek built?

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

What condition is ODONNELL/5570 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 ODONNELL/5570 over Missouri Flat Creek carry?

About 84 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is ODONNELL/5570 over Missouri Flat Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (6.9 m) and a deck 28 ft wide.

Who owns ODONNELL/5570 over Missouri Flat Creek?

It is owned by the County Highway Agency.