US Bridges

FM over Perry Creek

Fair

Plymouth County, Iowa · 091471402 · Structure no. 000000000273575

Built
1949
76 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
158 ft
3 main spans
Daily traffic
1,028
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Perry Creek is a steel continuous stringer/multi-beam or girder carrying FM over Perry Creek in Plymouth County, Iowa. It was built in 1949, so it is 76 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 1,028 vehicles a day, roughly 12% of them trucks, projected to reach 1,028 by 2044. The structure is 158 ft (48.2 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesFM
CrossesPerry Creek
Location091471402
RouteCounty Highway 0
CountyPlymouth County
StateIowa
Coordinates42.69334, -96.3703
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.1 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length158 ft (48.2 m)
Longest span60 ft (18.3 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,028 (2022)
Projected traffic1,028 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Perry Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is FM over Perry 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 June 2024.

How much traffic does FM over Perry Creek carry?

About 1,028 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is FM over Perry Creek?

The structure is 158 ft (48.2 m) long with a longest span of 60 ft (18.3 m) and a deck 32 ft wide.

Who owns FM over Perry Creek?

It is owned by the County Highway Agency.