US Bridges

R 63 (180th St) over Skunk River

Good

Story County, Iowa · 084 24 12 07 · Structure no. 000000000315541

Built
2011
14 years old
Condition
Good
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
259 ft
3 main spans
Daily traffic
219
2022 count
Owner
County
County Highway Agency

About this bridge

R 63 (180th St) over Skunk River is a prestressed concrete stringer/multi-beam or girder carrying R 63 (180th St) over Skunk River in Story County, Iowa. It was built in 2011, so it is 14 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 219 vehicles a day, projected to reach 219 by 2043. The structure is 259 ft (78.9 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesR 63 (180th St)
CrossesSkunk River
Location084 24 12 07
RouteCounty Highway 0
StateIowa
Coordinates42.0923, -93.58697
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2022
Inspection intervalevery 24 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating53.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length259 ft (78.9 m)
Longest span122 ft (37.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic219 (2022)
Projected traffic219 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was R 63 (180th St) over Skunk River built?

It was built in 2011, making it 14 years old in 2025.

What condition is R 63 (180th 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 December 2022.

How much traffic does R 63 (180th St) over Skunk River carry?

About 219 vehicles per day (2022 count).

How long is R 63 (180th St) over Skunk River?

The structure is 259 ft (78.9 m) long with a longest span of 122 ft (37.2 m) and a deck 33 ft wide.

Who owns R 63 (180th St) over Skunk River?

It is owned by the County Highway Agency.