US Bridges

370th ST over Creek

Good

Jackson County, Iowa · 087E4 · Structure no. 000000000194892

Built
2012
13 years old
Condition
Good
inspected March 2023
Type
Culvert
Steel
Length
33 ft
2 main spans
Daily traffic
71
2021 count
Owner
County
County Highway Agency

About this bridge

370th ST over Creek is a steel culvert carrying 370th ST over Creek in Jackson County, Iowa. It was built in 2012, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 71 vehicles a day, projected to reach 71 by 2043. The structure is 33 ft (10.1 m) long.

Carries370th ST
CrossesCreek
Location087E4
RouteCounty Highway 0
StateIowa
Coordinates42.35019, -90.48111
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.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65 US tons
Inventory rating59 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHL 93
Structure length33 ft (10.1 m)
Longest span13 ft (4.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71 (2021)
Projected traffic71 by 2043
Trucks0%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 370th ST over Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is 370th ST 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 March 2023.

How much traffic does 370th ST over Creek carry?

About 71 vehicles per day (2021 count).

How long is 370th ST over Creek?

The structure is 33 ft (10.1 m) long with a longest span of 13 ft (4.1 m).

Who owns 370th ST over Creek?

It is owned by the County Highway Agency.