US Bridges

US 6 over North Skunk River

Fair

Jasper County, Iowa · 1.3 Mi. E of Jct. 224 · Structure no. 000000000030490

Built
1924
101 years old, rebuilt 1952
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
422 ft
5 main spans
Daily traffic
2,180
2022 count
Owner
State
State Highway Agency

About this bridge

US 6 over North Skunk River is a steel continuous stringer/multi-beam or girder carrying US 6 over North Skunk River in Jasper County, Iowa. It was built in 1924 and reconstructed in 1952, so it is 101 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,180 vehicles a day, roughly 7% of them trucks, projected to reach 2,180 by 2042. The structure is 422 ft (128.6 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 6
CrossesNorth Skunk River
Location1.3 Mi. E of Jct. 224
RouteU.S. Route 6
CountyJasper County
StateIowa
Coordinates41.70281, -92.88014
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.1 US tons
Inventory rating30.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length422 ft (128.6 m)
Longest span92 ft (28 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,180 (2022)
Projected traffic2,180 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 6 over North Skunk River built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1952.

What condition is US 6 over North Skunk River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does US 6 over North Skunk River carry?

About 2,180 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is US 6 over North Skunk River?

The structure is 422 ft (128.6 m) long with a longest span of 92 ft (28 m) and a deck 34 ft wide.

Who owns US 6 over North Skunk River?

It is owned by the State Highway Agency.