US Bridges

Rt Nn E over Rock CR

Good

Lafayette County, Missouri · S 11 T 49 N R 24 W · Structure no. 29029

Built
2002
23 years old
Condition
Good
inspected January 2023
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
86
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Nn E over Rock CR is a concrete continuous culvert carrying Rt Nn E over Rock CR in Lafayette County, Missouri. It was built in 2002, so it is 23 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 86 vehicles a day, roughly 10% of them trucks, projected to reach 125 by 2044. The structure is 32 ft (9.7 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesRt Nn E
CrossesRock CR
LocationS 11 T 49 N R 24 W
RouteState Highway 0NN
Coordinates39.04972, -93.52371
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating84.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86 (2024)
Projected traffic125 by 2044
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

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 Rock CR built?

It was built in 2002, making it 23 years old in 2025.

What condition is Rt Nn E over Rock CR 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 January 2023.

How much traffic does Rt Nn E over Rock CR carry?

About 86 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rt Nn E over Rock CR?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (3 m).

Who owns Rt Nn E over Rock CR?

It is owned by the State Highway Agency.