US Bridges

FM over Wolf Creek Branch

Poor

Tama County, Iowa · 086131605 · Structure no. 000000000320190

Built
1914
111 years old, rebuilt 1994
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
27 ft
1 main span
Daily traffic
196
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Wolf Creek Branch is a concrete stringer/multi-beam or girder carrying FM over Wolf Creek Branch in Tama County, Iowa. It was built in 1914 and reconstructed in 1994, so it is 111 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 196 vehicles a day, roughly 17% of them trucks, projected to reach 196 by 2044. The structure is 27 ft (8.2 m) long and 30 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesFM
CrossesWolf Creek Branch
Location086131605
RouteCounty Highway 0
StateIowa
Coordinates42.25918, -92.36196
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating20 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic196 (2022)
Projected traffic196 by 2044
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Wolf Creek Branch built?

It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1994.

What condition is FM over Wolf Creek Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does FM over Wolf Creek Branch carry?

About 196 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is FM over Wolf Creek Branch?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns FM over Wolf Creek Branch?

It is owned by the County Highway Agency.