US Bridges

E18/130th ST over Skunk River

Good

Story County, Iowa · 085231901 · Structure no. 000000000049081

Built
2000
25 years old
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
143 ft
1 main span
Daily traffic
4,209
2022 count
Owner
County
County Highway Agency

About this bridge

E18/130th ST over Skunk River is a prestressed concrete stringer/multi-beam or girder carrying E18/130th ST over Skunk River in Story County, Iowa. It was built in 2000, so it is 25 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 4,209 vehicles a day, roughly 3% of them trucks, projected to reach 4,209 by 2043. The structure is 143 ft (43.6 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesE18/130th ST
CrossesSkunk River
Location085231901
RouteCounty Highway 0
StateIowa
Coordinates42.16604, -93.57802
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating64 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span139 ft (42.4 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,209 (2022)
Projected traffic4,209 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 E18/130th ST over Skunk River built?

It was built in 2000, making it 25 years old in 2025.

What condition is E18/130th ST over Skunk River 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 E18/130th ST over Skunk River carry?

About 4,209 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is E18/130th ST over Skunk River?

The structure is 143 ft (43.6 m) long with a longest span of 139 ft (42.4 m) and a deck 32 ft wide.

Who owns E18/130th ST over Skunk River?

It is owned by the County Highway Agency.