US Bridges

FM over Branch Wolf Creek

Fair

Tama County, Iowa · 086152904 · Structure no. 000000000320610

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
530
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Branch Wolf Creek is a concrete continuous slab carrying FM over Branch Wolf Creek in Tama County, Iowa. It was built in 1970, so it is 55 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 530 vehicles a day, roughly 16% of them trucks, projected to reach 530 by 2044. The structure is 102 ft (31.1 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesFM
CrossesBranch Wolf Creek
Location086152904
RouteCounty Highway 0
StateIowa
Coordinates42.22784, -92.63058
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.3 US tons
Inventory rating33.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length102 ft (31.1 m)
Longest span39 ft (11.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic530 (2022)
Projected traffic530 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 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 Branch Wolf Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is FM over Branch Wolf Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does FM over Branch Wolf Creek carry?

About 530 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is FM over Branch Wolf Creek?

The structure is 102 ft (31.1 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.

Who owns FM over Branch Wolf Creek?

It is owned by the County Highway Agency.