US Bridges

Timber Ridge RD over Br of W Fk Niangua

Fair

Webster County, Missouri · S 25 T 31 N R 19 W · Structure no. 13946

Built
1963
62 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
60
2023 count
Owner
County
County Highway Agency

About this bridge

Timber Ridge RD over Br of W Fk Niangua is a concrete culvert carrying Timber Ridge RD over Br of W Fk Niangua in Webster County, Missouri. It was built in 1963, so it is 62 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 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 60 vehicles a day, roughly 10% of them trucks, projected to reach 99 by 2043. The structure is 24 ft (7.3 m) long and 25 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesTimber Ridge RD
CrossesBr of W Fk Niangua
LocationS 25 T 31 N R 19 W
RouteCounty Highway 52
CountyWebster County
StateMissouri
Coordinates37.38434, -92.97696
Functional classRural Local

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2023)
Projected traffic99 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Timber Ridge RD over Br of W Fk Niangua built?

It was built in 1963, making it 62 years old in 2025.

What condition is Timber Ridge RD over Br of W Fk Niangua 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 April 2023.

How much traffic does Timber Ridge RD over Br of W Fk Niangua carry?

About 60 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Timber Ridge RD over Br of W Fk Niangua?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m) and a deck 25 ft wide.

Who owns Timber Ridge RD over Br of W Fk Niangua?

It is owned by the County Highway Agency.