US Bridges

NB US 218 over English River

Good

Washington County, Iowa · 0.6 Mi. S of Jct. Ia 22 · Structure no. 000000000601665

Built
1994
31 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
458 ft
5 main spans
Daily traffic
7,450
2022 count
Owner
State
State Highway Agency

About this bridge

NB US 218 over English River is a prestressed concrete stringer/multi-beam or girder carrying NB US 218 over English River in Washington County, Iowa. It was built in 1994, so it is 31 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 7,450 vehicles a day, roughly 19% of them trucks, projected to reach 7,450 by 2043. The structure is 458 ft (139.6 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB US 218
CrossesEnglish River
Location0.6 Mi. S of Jct. Ia 22
RouteU.S. Route 218
CountyWashington County
StateIowa
Coordinates41.47741, -91.55046
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.
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 within limits of footing or piles
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 rating70 US tons
Inventory rating35.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length458 ft (139.6 m)
Longest span92 ft (28 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,450 (2022)
Projected traffic7,450 by 2043
Trucks19%
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 NB US 218 over English River built?

It was built in 1994, making it 31 years old in 2025.

What condition is NB US 218 over English 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 NB US 218 over English River carry?

About 7,450 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is NB US 218 over English River?

The structure is 458 ft (139.6 m) long with a longest span of 92 ft (28 m) and a deck 43 ft wide.

Who owns NB US 218 over English River?

It is owned by the State Highway Agency.