US Bridges

FM over Long Creek

Fair

Louisa County, Iowa · 074051204 · Structure no. 000000000224250

Built
1965
60 years old, rebuilt 2017
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
178 ft
5 main spans
Daily traffic
290
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Long Creek is a concrete continuous slab carrying FM over Long Creek in Louisa County, Iowa. It was built in 1965 and reconstructed in 2017, so it is 60 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 290 vehicles a day, roughly 19% of them trucks, projected to reach 290 by 2044. The structure is 178 ft (54.3 m) long and 30 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesFM
CrossesLong Creek
Location074051204
RouteCounty Highway 0
StateIowa
Coordinates41.23194, -91.38737
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length178 ft (54.3 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 traffic290 (2022)
Projected traffic290 by 2044
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Long Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2017.

What condition is FM over Long 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 May 2024.

How much traffic does FM over Long Creek carry?

About 290 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is FM over Long Creek?

The structure is 178 ft (54.3 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.

Who owns FM over Long Creek?

It is owned by the County Highway Agency.