US Bridges

FM over Walnut Creek

Good

Ringgold County, Iowa · 069291601 · Structure no. 000000000297031

Built
1991
34 years old
Condition
Good
inspected December 2022
Type
Slab
Concrete Continuous
Length
88 ft
3 main spans
Daily traffic
110
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Walnut Creek is a concrete continuous slab carrying FM over Walnut Creek in Ringgold County, Iowa. It was built in 1991, so it is 34 years old, younger than the Iowa average of 45.5 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 110 vehicles a day, projected to reach 110 by 2043. The structure is 88 ft (26.8 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesWalnut Creek
Location069291601
RouteCounty Highway 0
StateIowa
Coordinates40.78291, -94.19828
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.3 US tons
Inventory rating40.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length88 ft (26.8 m)
Longest span34 ft (10.4 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2022)
Projected traffic110 by 2043
Trucks0%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Walnut Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is FM over Walnut Creek 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 December 2022.

How much traffic does FM over Walnut Creek carry?

About 110 vehicles per day (2022 count).

How long is FM over Walnut Creek?

The structure is 88 ft (26.8 m) long with a longest span of 34 ft (10.4 m) and a deck 33 ft wide.

Who owns FM over Walnut Creek?

It is owned by the County Highway Agency.