US Bridges

120th Ave over Cooper Creek

Good

Appanoose County, Iowa · 068190902 · Structure no. 000000000064791

Built
2013
12 years old
Condition
Good
inspected October 2020
Type
Slab
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

120th Ave over Cooper Creek is a concrete continuous slab carrying 120th Ave over Cooper Creek in Appanoose County, Iowa. It was built in 2013, so it is 12 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 26 vehicles a day, projected to reach 26 by 2043. The structure is 83 ft (25.3 m) long and 27 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries120th Ave
CrossesCooper Creek
Location068190902
RouteCounty Highway 0
CountyAppanoose County
StateIowa
Coordinates40.70117, -93.05873
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length83 ft (25.3 m)
Longest span31 ft (9.4 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 120th Ave over Cooper Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is 120th Ave over Cooper 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 October 2020.

How much traffic does 120th Ave over Cooper Creek carry?

About 26 vehicles per day (2022 count).

How long is 120th Ave over Cooper Creek?

The structure is 83 ft (25.3 m) long with a longest span of 31 ft (9.4 m) and a deck 27 ft wide.

Who owns 120th Ave over Cooper Creek?

It is owned by the County Highway Agency.