US Bridges

Rt T S over Little Niangua Rvr

Fair

Dallas County, Missouri · S 15 T 35 N R 19 W · Structure no. 7098

Built
1959
66 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
35 ft
3 main spans
Daily traffic
239
2024 count
Owner
State
State Highway Agency

About this bridge

Rt T S over Little Niangua Rvr is a concrete continuous culvert carrying Rt T S over Little Niangua Rvr in Dallas County, Missouri. It was built in 1959, so it is 66 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 239 vehicles a day, roughly 13% of them trucks, projected to reach 347 by 2044. The structure is 35 ft (10.8 m) long and 25 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesRt T S
CrossesLittle Niangua Rvr
LocationS 15 T 35 N R 19 W
RouteState Highway 0T
CountyDallas County
StateMissouri
Coordinates37.77269, -93.01034
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 10
Structure length35 ft (10.8 m)
Longest span11 ft (3.4 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic239 (2024)
Projected traffic347 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 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 T S over Little Niangua Rvr built?

It was built in 1959, making it 66 years old in 2025.

What condition is Rt T S over Little Niangua 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 November 2023.

How much traffic does Rt T S over Little Niangua Rvr carry?

About 239 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Rt T S over Little Niangua Rvr?

The structure is 35 ft (10.8 m) long with a longest span of 11 ft (3.4 m) and a deck 25 ft wide.

Who owns Rt T S over Little Niangua Rvr?

It is owned by the State Highway Agency.