US Bridges

Rt N S over Loutre Rvr

Fair

Callaway County, Missouri · S 3 T 49 N R 7 W · Structure no. 9793

Built
1947
78 years old, rebuilt 1973
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
174 ft
3 main spans
Daily traffic
312
2024 count
Owner
State
State Highway Agency

About this bridge

Rt N S over Loutre Rvr is a steel continuous stringer/multi-beam or girder carrying Rt N S over Loutre Rvr in Callaway County, Missouri. It was built in 1947 and reconstructed in 1973, so it is 78 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 312 vehicles a day, roughly 20% of them trucks, projected to reach 484 by 2044. The structure is 174 ft (53 m) long and 23 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesRt N S
CrossesLoutre Rvr
LocationS 3 T 49 N R 7 W
RouteState Highway 0N
Coordinates39.04587, -91.69241
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.7 US tons
Inventory rating25.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length174 ft (53 m)
Longest span70 ft (21.3 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic312 (2024)
Projected traffic484 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 Rt N S over Loutre Rvr built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1973.

What condition is Rt N S over Loutre Rvr 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 October 2024.

How much traffic does Rt N S over Loutre Rvr carry?

About 312 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is Rt N S over Loutre Rvr?

The structure is 174 ft (53 m) long with a longest span of 70 ft (21.3 m) and a deck 23 ft wide.

Who owns Rt N S over Loutre Rvr?

It is owned by the State Highway Agency.