US Bridges

W Fork Lane over W Fork Niangua Rvr

Good

Webster County, Missouri · S 20 T 31 N R 18 W · Structure no. 35713

Built
2015
10 years old
Condition
Good
inspected April 2023
Type
Channel Beam
Concrete
Length
80 ft
2 main spans
Daily traffic
10
2023 count
Owner
County
County Highway Agency

About this bridge

W Fork Lane over W Fork Niangua Rvr is a concrete channel beam carrying W Fork Lane over W Fork Niangua Rvr in Webster County, Missouri. It was built in 2015, so it is 10 years old, younger 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 17 by 2043. The structure is 80 ft (24.4 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesW Fork Lane
CrossesW Fork Niangua Rvr
LocationS 20 T 31 N R 18 W
RouteCounty Highway 49
Coordinates37.3908, -92.93337
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating43.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span39 ft (11.9 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic17 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W Fork Lane over W Fork Niangua Rvr built?

It was built in 2015, making it 10 years old in 2025.

What condition is W Fork Lane over W Fork Niangua 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 April 2023.

How much traffic does W Fork Lane over W Fork Niangua Rvr carry?

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

How long is W Fork Lane over W Fork Niangua Rvr?

The structure is 80 ft (24.4 m) long with a longest span of 39 ft (11.9 m) and a deck 22 ft wide.

Who owns W Fork Lane over W Fork Niangua Rvr?

It is owned by the County Highway Agency.