US Bridges

370th Ave over Creek

Good

Clinton County, Iowa · 080E51004 · Structure no. 000000000121611

Built
2017
8 years old
Condition
Good
inspected February 2021
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

370th Ave over Creek is a concrete slab carrying 370th Ave over Creek in Clinton County, Iowa. It was built in 2017, so it is 8 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 11 vehicles a day, projected to reach 11 by 2043. The structure is 24 ft (7.3 m) long and 29 ft wide.

Carries370th Ave
CrossesCreek
Location080E51004
RouteCounty Highway 0
StateIowa
Coordinates41.75078, -90.37429
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.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionFebruary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating73.4 US tons
Inventory rating43.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (6.9 m)
Deck width29 ft (8.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 370th Ave over Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is 370th Ave 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 February 2021.

How much traffic does 370th Ave over Creek carry?

About 11 vehicles per day (2022 count).

How long is 370th Ave over Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (6.9 m) and a deck 29 ft wide.

Who owns 370th Ave over Creek?

It is owned by the County Highway Agency.