US Bridges

FM over Purgatory Creek

GoodPosted for load

Carroll County, Iowa · 085330102 · Structure no. 000000000095921

Built
1972
53 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Purgatory Creek is a concrete continuous slab carrying FM over Purgatory Creek in Carroll County, Iowa. It was built in 1972, so it is 53 years old, older 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. Its operating status is: posted for load restriction.

It carries about 26 vehicles a day, projected to reach 26 by 2043. The structure is 100 ft (30.5 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM
CrossesPurgatory Creek
Location085330102
RouteCounty Highway 0
StateIowa
Coordinates42.19766, -94.64841
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.2 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length100 ft (30.5 m)
Longest span39 ft (11.9 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Purgatory Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is FM over Purgatory 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 July 2023.

How much traffic does FM over Purgatory Creek carry?

About 26 vehicles per day (2022 count).

How long is FM over Purgatory Creek?

The structure is 100 ft (30.5 m) long with a longest span of 39 ft (11.9 m) and a deck 26 ft wide.

Who owns FM over Purgatory Creek?

It is owned by the County Highway Agency.