US Bridges

Oklahoma LN over Unnamed Dtch

Good

Adair County, Missouri · S 18 T 61 N R 14 W · Structure no. 34246

Built
2010
15 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

Oklahoma LN over Unnamed Dtch is a steel stringer/multi-beam or girder carrying Oklahoma LN over Unnamed Dtch in Adair County, Missouri. It was built in 2010, so it is 15 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 22 by 2044. The structure is 31 ft (9.3 m) long and 16 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesOklahoma LN
CrossesUnnamed Dtch
LocationS 18 T 61 N R 14 W
RouteCounty Highway 347
Coordinates40.08075, -92.504
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.6 US tons
Inventory rating27.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length31 ft (9.3 m)
Longest span29 ft (8.8 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic22 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Oklahoma LN over Unnamed Dtch built?

It was built in 2010, making it 15 years old in 2025.

What condition is Oklahoma LN over Unnamed Dtch 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 January 2024.

How much traffic does Oklahoma LN over Unnamed Dtch carry?

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

How long is Oklahoma LN over Unnamed Dtch?

The structure is 31 ft (9.3 m) long with a longest span of 29 ft (8.8 m) and a deck 16 ft wide.

Who owns Oklahoma LN over Unnamed Dtch?

It is owned by the County Highway Agency.