US Bridges

Rt Nn E over Trib to Fox Rvr

Fair

Clark County, Missouri · S 21 T 66 N R 8 W · Structure no. 7736

Built
1954
71 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
143
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Nn E over Trib to Fox Rvr is a concrete continuous culvert carrying Rt Nn E over Trib to Fox Rvr in Clark County, Missouri. It was built in 1954, so it is 71 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 143 vehicles a day, roughly 9% of them trucks, projected to reach 207 by 2044. The structure is 27 ft (8.3 m) long and 28 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesRt Nn E
CrossesTrib to Fox Rvr
LocationS 21 T 66 N R 8 W
RouteState Highway 0NN
CountyClark County
StateMissouri
Coordinates40.51597, -91.78721
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 within limits of footing or piles
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length27 ft (8.3 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic143 (2024)
Projected traffic207 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 Nn E over Trib to Fox Rvr built?

It was built in 1954, making it 71 years old in 2025.

What condition is Rt Nn E over Trib to Fox 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 Nn E over Trib to Fox Rvr carry?

About 143 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Rt Nn E over Trib to Fox Rvr?

The structure is 27 ft (8.3 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Rt Nn E over Trib to Fox Rvr?

It is owned by the State Highway Agency.