US Bridges

M50 240th Ave over Prairie Creek

Good

Clay County, Iowa · 096363302 · Structure no. 000000000116751

Built
2022
3 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
37 ft
2 main spans
Daily traffic
447
2021 count
Owner
County
County Highway Agency

About this bridge

M50 240th Ave over Prairie Creek is a concrete culvert carrying M50 240th Ave over Prairie Creek in Clay County, Iowa. It was built in 2022, so it is 3 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 447 vehicles a day, roughly 16% of them trucks, projected to reach 447 by 2043. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesM50 240th Ave
CrossesPrairie Creek
Location096363302
RouteCounty Highway 0
StateIowa
Coordinates43.09742, -95.11215
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating44.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length37 ft (11.3 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic447 (2021)
Projected traffic447 by 2043
Trucks16%
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M50 240th Ave over Prairie Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is M50 240th Ave over Prairie 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 February 2023.

How much traffic does M50 240th Ave over Prairie Creek carry?

About 447 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is M50 240th Ave over Prairie Creek?

The structure is 37 ft (11.3 m) long with a longest span of 18 ft (5.5 m).

Who owns M50 240th Ave over Prairie Creek?

It is owned by the County Highway Agency.