US Bridges

Colorado Ave over Trib of Walnut CR

Good

Macon County, Missouri · S 13 T 60 N R 17 W · Structure no. 31153

Built
2005
20 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
40
2024 count
Owner
County
County Highway Agency

About this bridge

Colorado Ave over Trib of Walnut CR is a prestressed concrete continuous tee beam carrying Colorado Ave over Trib of Walnut CR in Macon County, Missouri. It was built in 2005, so it is 20 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2044. The structure is 130 ft (39.6 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesColorado Ave
CrossesTrib of Walnut CR
LocationS 13 T 60 N R 17 W
RouteCounty Highway 20
Coordinates40.01718, -92.74472
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span50 ft (15.2 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2024)
Projected traffic44 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 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 Colorado Ave over Trib of Walnut CR built?

It was built in 2005, making it 20 years old in 2025.

What condition is Colorado Ave over Trib of Walnut 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 2024.

How much traffic does Colorado Ave over Trib of Walnut CR carry?

About 40 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Colorado Ave over Trib of Walnut CR?

The structure is 130 ft (39.6 m) long with a longest span of 50 ft (15.2 m) and a deck 25 ft wide.

Who owns Colorado Ave over Trib of Walnut CR?

It is owned by the County Highway Agency.