US Bridges

341st ST over Small Creek

Good

Jackson County, Iowa · 087E42403 · Structure no. 000000000194922

Built
2020
5 years old
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
235
2022 count
Owner
County
County Highway Agency

About this bridge

341st ST over Small Creek is a steel stringer/multi-beam or girder carrying 341st ST over Small Creek in Jackson County, Iowa. It was built in 2020, so it is 5 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 235 vehicles a day, projected to reach 235 by 2043. The structure is 50 ft (15.2 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries341st ST
CrossesSmall Creek
Location087E42403
RouteCounty Highway 0
CountyJackson County
StateIowa
Coordinates42.33092, -90.44187
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating63.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic235 (2022)
Projected traffic235 by 2043
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 341st ST over Small Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is 341st ST over Small 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 November 2022.

How much traffic does 341st ST over Small Creek carry?

About 235 vehicles per day (2022 count).

How long is 341st ST over Small Creek?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.

Who owns 341st ST over Small Creek?

It is owned by the County Highway Agency.