US Bridges

N Ave over Cow Br

Good

Atchison County, Missouri · S 32 T 65 N R 40 W · Structure no. 19726

Built
1995
30 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
3 main spans
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

N Ave over Cow Br is a steel stringer/multi-beam or girder carrying N Ave over Cow Br in Atchison County, Missouri. It was built in 1995, so it is 30 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 8 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 100 ft (30.6 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesN Ave
CrossesCow Br
LocationS 32 T 65 N R 40 W
RouteCounty Highway 231
Coordinates40.40249, -95.42549
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.3 US tons
Inventory rating42.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length100 ft (30.6 m)
Longest span40 ft (12.1 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.4 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 closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 N Ave over Cow Br built?

It was built in 1995, making it 30 years old in 2025.

What condition is N Ave over Cow Br 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 N Ave over Cow Br carry?

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

How long is N Ave over Cow Br?

The structure is 100 ft (30.6 m) long with a longest span of 40 ft (12.1 m) and a deck 25 ft wide.

Who owns N Ave over Cow Br?

It is owned by the County Highway Agency.