US Bridges

CO RD W64 over English River

Good

Washington County, Iowa · 077061502 · Structure no. 000000000051581

Built
2006
19 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
667 ft
4 main spans
Daily traffic
1,230
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD W64 over English River is a prestressed concrete stringer/multi-beam or girder carrying CO RD W64 over English River in Washington County, Iowa. It was built in 2006, so it is 19 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 1,230 vehicles a day, roughly 8% of them trucks, projected to reach 1,230 by 2043. The structure is 667 ft (203.3 m) long and 32 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesCO RD W64
CrossesEnglish River
Location077061502
RouteCounty Highway 0
StateIowa
Coordinates41.47944, -91.54142
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length667 ft (203.3 m)
Longest span121 ft (36.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,230 (2022)
Projected traffic1,230 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD W64 over English River built?

It was built in 2006, making it 19 years old in 2025.

What condition is CO RD W64 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 February 2023.

How much traffic does CO RD W64 over English River carry?

About 1,230 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is CO RD W64 over English River?

The structure is 667 ft (203.3 m) long with a longest span of 121 ft (36.9 m) and a deck 32 ft wide.

Who owns CO RD W64 over English River?

It is owned by the County Highway Agency.