US Bridges

US 218 SB over N. Fork Long Creek

Good

Washington County, Iowa · 1.0 Mi. S of Jct. Ia 92 · Structure no. 000000000606902

Built
1997
28 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
208 ft
3 main spans
Daily traffic
5,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 218 SB over N. Fork Long Creek is a prestressed concrete stringer/multi-beam or girder carrying US 218 SB over N. Fork Long Creek in Washington County, Iowa. It was built in 1997, so it is 28 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 5,500 vehicles a day, roughly 23% of them trucks, projected to reach 5,500 by 2043. The structure is 208 ft (63.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 218 SB
CrossesN. Fork Long Creek
Location1.0 Mi. S of Jct. Ia 92
RouteU.S. Route 218
StateIowa
Coordinates41.27818, -91.53587
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.6 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length208 ft (63.5 m)
Longest span69 ft (21 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2023)
Projected traffic5,500 by 2043
Trucks23%
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 SB over N. Fork Long Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is US 218 SB over N. Fork Long Creek 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 US 218 SB over N. Fork Long Creek carry?

About 5,500 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is US 218 SB over N. Fork Long Creek?

The structure is 208 ft (63.5 m) long with a longest span of 69 ft (21 m) and a deck 43 ft wide.

Who owns US 218 SB over N. Fork Long Creek?

It is owned by the State Highway Agency.