US Bridges

FM over East Fork Crooked Creek

Good

Washington County, Iowa · 074072410 · Structure no. 000000000335811

Built
1990
35 years old
Condition
Good
inspected March 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
246 ft
3 main spans
Daily traffic
490
2022 count
Owner
County
County Highway Agency

About this bridge

FM over East Fork Crooked Creek is a prestressed concrete stringer/multi-beam or girder carrying FM over East Fork Crooked Creek in Washington County, Iowa. It was built in 1990, so it is 35 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 490 vehicles a day, roughly 28% of them trucks, projected to reach 490 by 2043. The structure is 246 ft (75 m) long and 33 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesFM
CrossesEast Fork Crooked Creek
Location074072410
RouteCounty Highway 0
StateIowa
Coordinates41.20027, -91.60273
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating93.6 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length246 ft (75 m)
Longest span80 ft (24.4 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic490 (2022)
Projected traffic490 by 2043
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 East Fork Crooked Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is FM over East Fork Crooked Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2021.

How much traffic does FM over East Fork Crooked Creek carry?

About 490 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is FM over East Fork Crooked Creek?

The structure is 246 ft (75 m) long with a longest span of 80 ft (24.4 m) and a deck 33 ft wide.

Who owns FM over East Fork Crooked Creek?

It is owned by the County Highway Agency.