US Bridges

US 54 E over Litttle Niangua Ri

Fair

Camden County, Missouri · S 19 T 37 N R 19 W · Structure no. 3655

Built
1987
38 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
356 ft
4 main spans
Daily traffic
2,028
2024 count
Owner
State
State Highway Agency

About this bridge

US 54 E over Litttle Niangua Ri is a steel continuous stringer/multi-beam or girder carrying US 54 E over Litttle Niangua Ri in Camden County, Missouri. It was built in 1987, so it is 38 years old, younger 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 6 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 2,028 vehicles a day, roughly 13% of them trucks, projected to reach 3,549 by 2044. The structure is 356 ft (108.5 m) long and 41 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesUS 54 E
CrossesLitttle Niangua Ri
LocationS 19 T 37 N R 19 W
RouteU.S. Route 54
CountyCamden County
StateMissouri
Coordinates37.93511, -93.06679
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length356 ft (108.5 m)
Longest span120 ft (36.6 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,028 (2024)
Projected traffic3,549 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemYes

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 US 54 E over Litttle Niangua Ri built?

It was built in 1987, making it 38 years old in 2025.

What condition is US 54 E over Litttle Niangua Ri 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 June 2023.

How much traffic does US 54 E over Litttle Niangua Ri carry?

About 2,028 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is US 54 E over Litttle Niangua Ri?

The structure is 356 ft (108.5 m) long with a longest span of 120 ft (36.6 m) and a deck 41 ft wide.

Who owns US 54 E over Litttle Niangua Ri?

It is owned by the State Highway Agency.