US Bridges

FM over Elk Creek

PoorPosted for load

Decatur County, Iowa · 069273506 · Structure no. 000000000138470

Built
1958
67 years old
Condition
Poor
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
178 ft
3 main spans
Daily traffic
240
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Elk Creek is a steel continuous stringer/multi-beam or girder carrying FM over Elk Creek in Decatur County, Iowa. It was built in 1958, so it is 67 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 240 vehicles a day, roughly 23% of them trucks, projected to reach 240 by 2042. The structure is 178 ft (54.3 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM
CrossesElk Creek
Location069273506
RouteCounty Highway 0
StateIowa
Coordinates40.72467, -93.93861
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
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating33.7 US tons
Inventory rating20.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length178 ft (54.3 m)
Longest span68 ft (20.7 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2022)
Projected traffic240 by 2042
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Elk Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is FM over Elk 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 Elk Creek carry?

About 240 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is FM over Elk Creek?

The structure is 178 ft (54.3 m) long with a longest span of 68 ft (20.7 m) and a deck 22 ft wide.

Who owns FM over Elk Creek?

It is owned by the County Highway Agency.