US Bridges

Rt W S over Knox Br

Fair

Lincoln County, Missouri · S 26 T 51 N R 1 E · Structure no. 8356

Built
1963
62 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
42 ft
3 main spans
Daily traffic
184
2024 count
Owner
State
State Highway Agency

About this bridge

Rt W S over Knox Br is a concrete continuous culvert carrying Rt W S over Knox Br in Lincoln 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 184 vehicles a day, roughly 9% of them trucks, projected to reach 368 by 2044. The structure is 42 ft (12.8 m) long and 31 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesRt W S
CrossesKnox Br
LocationS 26 T 51 N R 1 E
RouteState Highway 0W
Coordinates39.15253, -90.86627
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length42 ft (12.8 m)
Longest span13 ft (4 m)
Deck width31 ft (9.3 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic184 (2024)
Projected traffic368 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 W S over Knox Br built?

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

What condition is Rt W S over Knox Br 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 September 2024.

How much traffic does Rt W S over Knox Br carry?

About 184 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Rt W S over Knox Br?

The structure is 42 ft (12.8 m) long with a longest span of 13 ft (4 m) and a deck 31 ft wide.

Who owns Rt W S over Knox Br?

It is owned by the State Highway Agency.