US Bridges

E 18 (130th St) over Hamilton-Story 1 Open Dd

Good

Story County, Iowa · 085 24 22 01 · Structure no. 000000000316391

Built
2012
13 years old
Condition
Good
inspected November 2022
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
1,427
2022 count
Owner
County
County Highway Agency

About this bridge

E 18 (130th St) over Hamilton-Story 1 Open Dd is a concrete continuous culvert carrying E 18 (130th St) over Hamilton-Story 1 Open Dd in Story 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 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 1,427 vehicles a day, roughly 10% of them trucks, projected to reach 1,427 by 2043. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesE 18 (130th St)
CrossesHamilton-Story 1 Open Dd
Location085 24 22 01
RouteCounty Highway 0
CountyStory County
StateIowa
Coordinates42.1663, -93.62819
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.6 US tons
Inventory rating45.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,427 (2022)
Projected traffic1,427 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 E 18 (130th St) over Hamilton-Story 1 Open Dd built?

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

What condition is E 18 (130th St) over Hamilton-Story 1 Open Dd 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 E 18 (130th St) over Hamilton-Story 1 Open Dd carry?

About 1,427 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is E 18 (130th St) over Hamilton-Story 1 Open Dd?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3 m).

Who owns E 18 (130th St) over Hamilton-Story 1 Open Dd?

It is owned by the County Highway Agency.