US Bridges

L Ave over Rock CR

Good

Atchison County, Missouri · S 31 T 66 N R 40 W · Structure no. 32180

Built
1998
27 years old, rebuilt 2007
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
110 ft
2 main spans
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

L Ave over Rock CR is a steel continuous stringer/multi-beam or girder carrying L Ave over Rock CR in Atchison County, Missouri. It was built in 1998 and reconstructed in 2007, so it is 27 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 15 vehicles a day, roughly 10% of them trucks, projected to reach 17 by 2044. The structure is 110 ft (33.5 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesL Ave
CrossesRock CR
LocationS 31 T 66 N R 40 W
RouteCounty Highway 145
CountyAtchison County
StateMissouri
Coordinates40.49522, -95.46878
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span74 ft (22.7 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic17 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 L Ave over Rock CR built?

It was built in 1998, making it 27 years old in 2025. It was reconstructed in 2007.

What condition is L Ave 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 February 2024.

How much traffic does L Ave over Rock CR carry?

About 15 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is L Ave over Rock CR?

The structure is 110 ft (33.5 m) long with a longest span of 74 ft (22.7 m) and a deck 25 ft wide.

Who owns L Ave over Rock CR?

It is owned by the County Highway Agency.