US Bridges

W 270 ST over White Oak CR

Good

Harrison County, Missouri · S 22 T 64 N R 29 W · Structure no. 31129

Built
2005
20 years old
Condition
Good
inspected March 2024
Type
Channel Beam
Concrete
Length
33 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

W 270 ST over White Oak CR is a concrete channel beam carrying W 270 ST over White Oak CR in Harrison County, Missouri. It was built in 2005, so it is 20 years old, younger than the Missouri average of 45.1 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.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 33 ft (10.1 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesW 270 ST
CrossesWhite Oak CR
LocationS 22 T 64 N R 29 W
RouteCounty Highway 380
Coordinates40.32485, -94.14036
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.4 US tons
Inventory rating46.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span31 ft (9.6 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 by 2044
Trucks10%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W 270 ST over White Oak CR built?

It was built in 2005, making it 20 years old in 2025.

What condition is W 270 ST over White Oak CR 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 March 2024.

How much traffic does W 270 ST over White Oak CR carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is W 270 ST over White Oak CR?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.6 m) and a deck 20 ft wide.

Who owns W 270 ST over White Oak CR?

It is owned by the County Highway Agency.