US Bridges

FM over Little Wapsipinicon Rvr

PoorPosted for load

Chickasaw County, Iowa · 096130701 · Structure no. 000000000112400

Built
1961
64 years old, rebuilt 1989
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
170 ft
3 main spans
Daily traffic
265
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Little Wapsipinicon Rvr is a prestressed concrete stringer/multi-beam or girder carrying FM over Little Wapsipinicon Rvr in Chickasaw County, Iowa. It was built in 1961 and reconstructed in 1989, so it is 64 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 3 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 265 vehicles a day, roughly 34% of them trucks, projected to reach 265 by 2044. The structure is 170 ft (51.8 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesFM
CrossesLittle Wapsipinicon Rvr
Location096130701
RouteCounty Highway 0
StateIowa
Coordinates43.15564, -92.43566
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.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating17.1 US tons
Inventory rating4.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length170 ft (51.8 m)
Longest span56 ft (17.1 m)
Deck width26 ft (7.8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (2022)
Projected traffic265 by 2044
Trucks34%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Little Wapsipinicon Rvr built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1989.

What condition is FM over Little Wapsipinicon Rvr 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 March 2024.

How much traffic does FM over Little Wapsipinicon Rvr carry?

About 265 vehicles per day (2022 count), of which roughly 34% are trucks.

How long is FM over Little Wapsipinicon Rvr?

The structure is 170 ft (51.8 m) long with a longest span of 56 ft (17.1 m) and a deck 26 ft wide.

Who owns FM over Little Wapsipinicon Rvr?

It is owned by the County Highway Agency.