US Bridges

Anderson School RD over Walnut CR

Good

Pettis County, Missouri · S 2 T 45 N R 21 W · Structure no. 20669

Built
1963
62 years old, rebuilt 2015
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
79 ft
1 main span
Daily traffic
125
2024 count
Owner
County
County Highway Agency

About this bridge

Anderson School RD over Walnut CR is a steel stringer/multi-beam or girder carrying Anderson School RD over Walnut CR in Pettis County, Missouri. It was built in 1963 and reconstructed in 2015, so it is 62 years old, older 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 125 vehicles a day, roughly 10% of them trucks, projected to reach 213 by 2044. The structure is 79 ft (24.1 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesAnderson School RD
CrossesWalnut CR
LocationS 2 T 45 N R 21 W
RouteCounty Highway 270
Coordinates38.62374, -93.20972
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.3 US tons
Inventory rating48.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span78 ft (23.8 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2024)
Projected traffic213 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Anderson School RD over Walnut CR built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2015.

What condition is Anderson School RD over 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 February 2024.

How much traffic does Anderson School RD over Walnut CR carry?

About 125 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Anderson School RD over Walnut CR?

The structure is 79 ft (24.1 m) long with a longest span of 78 ft (23.8 m) and a deck 20 ft wide.

Who owns Anderson School RD over Walnut CR?

It is owned by the County Highway Agency.