US Bridges

FM over Plymouth Creek

Good

Plymouth County, Iowa · 092441602 · Structure no. 000000000274371

Built
1975
50 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
789
2021 count
Owner
County
County Highway Agency

About this bridge

FM over Plymouth Creek is a concrete continuous culvert carrying FM over Plymouth Creek in Plymouth County, Iowa. It was built in 1975, so it is 50 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.

It carries about 789 vehicles a day, projected to reach 789 by 2044. The structure is 24 ft (7.3 m) long.

CarriesFM
CrossesPlymouth Creek
Location092441602
RouteCounty Highway 0
StateIowa
Coordinates42.78599, -96.057
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.2 US tons
Inventory rating23.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic789 (2021)
Projected traffic789 by 2044
Trucks0%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Plymouth Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is FM over Plymouth 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 May 2023.

How much traffic does FM over Plymouth Creek carry?

About 789 vehicles per day (2021 count).

How long is FM over Plymouth Creek?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns FM over Plymouth Creek?

It is owned by the County Highway Agency.