US Bridges

Mo 11 S over N Fk Salt Rvr

Good

Adair County, Missouri · S 27 T 63 N R 14 W · Structure no. 96

Built
1957
68 years old, rebuilt 2009
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
155 ft
3 main spans
Daily traffic
750
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 11 S over N Fk Salt Rvr is a steel continuous stringer/multi-beam or girder carrying Mo 11 S over N Fk Salt Rvr in Adair County, Missouri. It was built in 1957 and reconstructed in 2009, so it is 68 years old, older 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 750 vehicles a day, roughly 23% of them trucks, projected to reach 938 by 2044. The structure is 155 ft (47.2 m) long and 27 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesMo 11 S
CrossesN Fk Salt Rvr
LocationS 27 T 63 N R 14 W
RouteState Highway 11
Coordinates40.22961, -92.44123
Functional classRural Major Collector

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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating32.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length155 ft (47.2 m)
Longest span52 ft (15.9 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2024)
Projected traffic938 by 2044
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 11 S over N Fk Salt Rvr built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2009.

What condition is Mo 11 S over N Fk Salt Rvr 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 December 2023.

How much traffic does Mo 11 S over N Fk Salt Rvr carry?

About 750 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is Mo 11 S over N Fk Salt Rvr?

The structure is 155 ft (47.2 m) long with a longest span of 52 ft (15.9 m) and a deck 27 ft wide.

Who owns Mo 11 S over N Fk Salt Rvr?

It is owned by the State Highway Agency.