US Bridges

CO RD W15 over Skunk River

Good

Keokuk County, Iowa · 074100204 · Structure no. 000000000032671

Built
2004
21 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
622 ft
7 main spans
Daily traffic
620
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD W15 over Skunk River is a prestressed concrete stringer/multi-beam or girder carrying CO RD W15 over Skunk River in Keokuk County, Iowa. It was built in 2004, so it is 21 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 620 vehicles a day, roughly 20% of them trucks, projected to reach 620 by 2044. The structure is 622 ft (189.6 m) long and 33 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesCO RD W15
CrossesSkunk River
Location074100204
RouteCounty Highway 0
StateIowa
Coordinates41.25019, -91.97177
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 inspectionMarch 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating76.5 US tons
Inventory rating38.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length622 ft (189.6 m)
Longest span107 ft (32.6 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic620 (2022)
Projected traffic620 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD W15 over Skunk River built?

It was built in 2004, making it 21 years old in 2025.

What condition is CO RD W15 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 March 2024.

How much traffic does CO RD W15 over Skunk River carry?

About 620 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is CO RD W15 over Skunk River?

The structure is 622 ft (189.6 m) long with a longest span of 107 ft (32.6 m) and a deck 33 ft wide.

Who owns CO RD W15 over Skunk River?

It is owned by the County Highway Agency.