US Bridges

FM over Whippoorwill Ck

Fair

Monroe County, Iowa · 073181701 · Structure no. 000000000253691

Built
1951
74 years old, rebuilt 2017
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
240 ft
3 main spans
Daily traffic
230
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Whippoorwill Ck is a steel continuous stringer/multi-beam or girder carrying FM over Whippoorwill Ck in Monroe County, Iowa. It was built in 1951 and reconstructed in 2017, so it is 74 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 6 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 230 vehicles a day, roughly 8% of them trucks, projected to reach 230 by 2043. The structure is 240 ft (73.2 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM
CrossesWhippoorwill Ck
Location073181701
RouteCounty Highway 0
StateIowa
Coordinates41.13216, -92.95442
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating39.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length240 ft (73.2 m)
Longest span94 ft (28.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2022)
Projected traffic230 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Whippoorwill Ck built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2017.

What condition is FM over Whippoorwill Ck 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 December 2023.

How much traffic does FM over Whippoorwill Ck carry?

About 230 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is FM over Whippoorwill Ck?

The structure is 240 ft (73.2 m) long with a longest span of 94 ft (28.7 m) and a deck 32 ft wide.

Who owns FM over Whippoorwill Ck?

It is owned by the County Highway Agency.