US Bridges

FM over Branch Wolf Creek

PoorPosted for load

Tama County, Iowa · 085130602 · Structure no. 000000000319470

Built
1916
109 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
34
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Branch Wolf Creek is a steel stringer/multi-beam or girder carrying FM over Branch Wolf Creek in Tama County, Iowa. It was built in 1916, so it is 109 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. Its operating status is: posted for load restriction.

It carries about 34 vehicles a day, projected to reach 34 by 2044. The structure is 29 ft (8.8 m) long and 19 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesBranch Wolf Creek
Location085130602
RouteCounty Highway 0
StateIowa
Coordinates42.19944, -92.41667
Functional classRural Minor 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
Deck4 PoorAdvanced section loss, deterioration, 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating17.9 US tons
Inventory rating10.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length29 ft (8.8 m)
Longest span26 ft (7.9 m)
Deck width19 ft (5.7 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)
Projected traffic34 by 2044
Trucks0%
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 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 Branch Wolf Creek built?

It was built in 1916, making it 109 years old in 2025.

What condition is FM over Branch Wolf Creek 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 Branch Wolf Creek carry?

About 34 vehicles per day (2022 count).

How long is FM over Branch Wolf Creek?

The structure is 29 ft (8.8 m) long with a longest span of 26 ft (7.9 m) and a deck 19 ft wide.

Who owns FM over Branch Wolf Creek?

It is owned by the County Highway Agency.