US Bridges

390th over Wapsipinicon River

Fair

Mitchell County, Iowa · 098151203 · Structure no. 000000000247711

Built
1995
30 years old
Condition
Fair
inspected January 2024
Type
Culvert
Steel
Length
67 ft
3 main spans
Daily traffic
33
2022 count
Owner
County
County Highway Agency

About this bridge

390th over Wapsipinicon River is a steel culvert carrying 390th over Wapsipinicon River in Mitchell County, Iowa. It was built in 1995, so it is 30 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 33 vehicles a day, projected to reach 33 by 2044. The structure is 67 ft (20.4 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries390th
CrossesWapsipinicon River
Location098151203
RouteCounty Highway 0
CountyMitchell County
StateIowa
Coordinates43.3257, -92.56428
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating50.4 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33 (2022)
Projected traffic33 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 390th over Wapsipinicon River built?

It was built in 1995, making it 30 years old in 2025.

What condition is 390th over Wapsipinicon River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does 390th over Wapsipinicon River carry?

About 33 vehicles per day (2022 count).

How long is 390th over Wapsipinicon River?

The structure is 67 ft (20.4 m) long with a longest span of 17 ft (5.2 m).

Who owns 390th over Wapsipinicon River?

It is owned by the County Highway Agency.