US Bridges

180th ST over Rock Creek

Good

Van Buren County, Iowa · 069091601 · Structure no. 000000000328501

Built
2019
6 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
91
2022 count
Owner
County
County Highway Agency

About this bridge

180th ST over Rock Creek is a concrete continuous culvert carrying 180th ST over Rock Creek in Van Buren County, Iowa. It was built in 2019, so it is 6 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 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 91 vehicles a day, projected to reach 91 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Carries180th ST
CrossesRock Creek
Location069091601
RouteCounty Highway 0
StateIowa
Coordinates40.78404, -91.90827
Functional classRural Local

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 inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72.1 US tons
Inventory rating55.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91 (2022)
Projected traffic91 by 2043
Trucks0%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$50,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 180th ST over Rock Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is 180th ST over Rock 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 180th ST over Rock Creek carry?

About 91 vehicles per day (2022 count).

How long is 180th ST over Rock Creek?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m).

Who owns 180th ST over Rock Creek?

It is owned by the County Highway Agency.