US Bridges

FM over Elkhorn Creek (little)

PoorPosted for load

Cedar County, Iowa · 079012803 · Structure no. 000000000101610

Built
1915
110 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
35
2021 count
Owner
County
County Highway Agency

About this bridge

FM over Elkhorn Creek (little) is a steel stringer/multi-beam or girder carrying FM over Elkhorn Creek (little) in Cedar County, Iowa. It was built in 1915, so it is 110 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 other load-capacity restriction.

It carries about 35 vehicles a day, projected to reach 35 by 2043. The structure is 29 ft (8.8 m) long and 17 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM
CrossesElkhorn Creek (little)
Location079012803
RouteCounty Highway 0
StateIowa
Coordinates41.61906, -90.97602
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating47.8 US tons
Inventory rating25.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width17 ft (5.2 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2021)
Projected traffic35 by 2043
Trucks0%
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 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 Elkhorn Creek (little) built?

It was built in 1915, making it 110 years old in 2025.

What condition is FM over Elkhorn Creek (little) 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 May 2023.

How much traffic does FM over Elkhorn Creek (little) carry?

About 35 vehicles per day (2021 count).

How long is FM over Elkhorn Creek (little)?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 17 ft wide.

Who owns FM over Elkhorn Creek (little)?

It is owned by the County Highway Agency.