US Bridges

Underwood Ave over Soap Creek

Good

Mitchell County, Iowa · 098150902 · Structure no. 000000000247701

Built
2005
20 years old
Condition
Good
inspected January 2024
Type
Culvert
Steel
Length
35 ft
3 main spans
Daily traffic
33
2022 count
Owner
County
County Highway Agency

About this bridge

Underwood Ave over Soap Creek is a steel culvert carrying Underwood Ave over Soap Creek in Mitchell County, Iowa. It was built in 2005, so it is 20 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 33 vehicles a day, projected to reach 33 by 2044. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUnderwood Ave
CrossesSoap Creek
Location098150902
RouteCounty Highway 0
CountyMitchell County
StateIowa
Coordinates43.31359, -92.63366
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 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 alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length35 ft (10.7 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 traffic33 (2022)
Projected traffic33 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Underwood Ave over Soap Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Underwood Ave over Soap 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 January 2024.

How much traffic does Underwood Ave over Soap Creek carry?

About 33 vehicles per day (2022 count).

How long is Underwood Ave over Soap Creek?

The structure is 35 ft (10.7 m) long with a longest span of 10 ft (3 m).

Who owns Underwood Ave over Soap Creek?

It is owned by the County Highway Agency.