US Bridges

US 218 Ia 27 NB over Skunk River

Good

Henry County, Iowa · 4.7 Mi. S of S JCT US 218 · Structure no. 000000000028471

Built
2019
6 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
624 ft
5 main spans
Daily traffic
4,850
2022 count
Owner
State
State Highway Agency

About this bridge

US 218 Ia 27 NB over Skunk River is a prestressed concrete stringer/multi-beam or girder carrying US 218 Ia 27 NB over Skunk River in Henry County, Iowa. It was built in 2019, so it is 6 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 4,850 vehicles a day, roughly 28% of them trucks, projected to reach 4,850 by 2043. The structure is 624 ft (190.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 218 Ia 27 NB
CrossesSkunk River
Location4.7 Mi. S of S JCT US 218
RouteU.S. Route 218
StateIowa
Coordinates40.89683, -91.55501
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length624 ft (190.2 m)
Longest span127 ft (38.7 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,850 (2022)
Projected traffic4,850 by 2043
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 218 Ia 27 NB over Skunk River built?

It was built in 2019, making it 6 years old in 2025.

What condition is US 218 Ia 27 NB 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 August 2023.

How much traffic does US 218 Ia 27 NB over Skunk River carry?

About 4,850 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is US 218 Ia 27 NB over Skunk River?

The structure is 624 ft (190.2 m) long with a longest span of 127 ft (38.7 m) and a deck 43 ft wide.

Who owns US 218 Ia 27 NB over Skunk River?

It is owned by the State Highway Agency.