US Bridges

130th Ave over West Rock Creek

Good

Clinton County, Iowa · 081E13406 · Structure no. 000000000121901

Built
2005
20 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
1,060
2022 count
Owner
County
County Highway Agency

About this bridge

130th Ave over West Rock Creek is a concrete continuous slab carrying 130th Ave over West Rock Creek in Clinton 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 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 1,060 vehicles a day, roughly 13% of them trucks, projected to reach 1,060 by 2044. The structure is 125 ft (38.1 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries130th Ave
CrossesWest Rock Creek
Location081E13406
RouteCounty Highway 0
StateIowa
Coordinates41.77324, -90.82769
Functional classRural Major Collector

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 inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating84.9 US tons
Inventory rating48.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span49 ft (14.9 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,060 (2022)
Projected traffic1,060 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 130th Ave over West Rock Creek built?

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

What condition is 130th Ave over West Rock 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 May 2024.

How much traffic does 130th Ave over West Rock Creek carry?

About 1,060 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is 130th Ave over West Rock Creek?

The structure is 125 ft (38.1 m) long with a longest span of 49 ft (14.9 m) and a deck 33 ft wide.

Who owns 130th Ave over West Rock Creek?

It is owned by the County Highway Agency.