US Bridges

FM over Shane Creek

PoorPosted for load

Decatur County, Iowa · 067272003 · Structure no. 000000000136630

Built
1950
75 years old
Condition
Poor
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
102 ft
3 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Shane Creek is a steel stringer/multi-beam or girder carrying FM over Shane Creek in Decatur County, Iowa. It was built in 1950, so it is 75 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 50 vehicles a day, projected to reach 50 by 2042. The structure is 102 ft (31.1 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM
CrossesShane Creek
Location067272003
RouteCounty Highway 0
CountyDecatur County
StateIowa
Coordinates40.58762, -93.99381
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment7: Better than present minimum criteria
Operating rating20.5 US tons
Inventory rating12.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans3
Design loadUnknown
Structure length102 ft (31.1 m)
Longest span50 ft (15.2 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic50 by 2042
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 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 Shane Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is FM over Shane 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 November 2022.

How much traffic does FM over Shane Creek carry?

About 50 vehicles per day (2022 count).

How long is FM over Shane Creek?

The structure is 102 ft (31.1 m) long with a longest span of 50 ft (15.2 m) and a deck 20 ft wide.

Who owns FM over Shane Creek?

It is owned by the County Highway Agency.