US Bridges

250th Avenue over Creek

Good

Clinton County, Iowa · 083E32202 · Structure no. 000000000125070

Built
1958
67 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
950
2022 count
Owner
County
County Highway Agency

About this bridge

250th Avenue over Creek is a concrete culvert carrying 250th Avenue over Creek in Clinton County, Iowa. It was built in 1958, so it is 67 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 950 vehicles a day, roughly 10% of them trucks, projected to reach 950 by 2044. The structure is 24 ft (7.3 m) long.

Carries250th Avenue
CrossesCreek
Location083E32202
RouteCounty Highway 0
StateIowa
Coordinates41.98191, -90.60679
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.7 US tons
Inventory rating48.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
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 traffic950 (2022)
Projected traffic950 by 2044
Trucks10%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 250th Avenue over Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is 250th Avenue over 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 December 2024.

How much traffic does 250th Avenue over Creek carry?

About 950 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is 250th Avenue over Creek?

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

Who owns 250th Avenue over Creek?

It is owned by the County Highway Agency.