US Bridges

CO RD W64 over Drainage Ditch

Fair

Washington County, Iowa · 074062206 · Structure no. 000000000051481

Built
1982
43 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
210
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD W64 over Drainage Ditch is a concrete continuous slab carrying CO RD W64 over Drainage Ditch in Washington County, Iowa. It was built in 1982, so it is 43 years old, younger 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 210 vehicles a day, projected to reach 210 by 2043. The structure is 83 ft (25.3 m) long and 47 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesCO RD W64
CrossesDrainage Ditch
Location074062206
RouteCounty Highway 0
CountyWashington County
StateIowa
Coordinates41.20014, -91.53346
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length83 ft (25.3 m)
Longest span31 ft (9.4 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2022)
Projected traffic210 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD W64 over Drainage Ditch built?

It was built in 1982, making it 43 years old in 2025.

What condition is CO RD W64 over Drainage Ditch 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 February 2023.

How much traffic does CO RD W64 over Drainage Ditch carry?

About 210 vehicles per day (2022 count).

How long is CO RD W64 over Drainage Ditch?

The structure is 83 ft (25.3 m) long with a longest span of 31 ft (9.4 m) and a deck 47 ft wide.

Who owns CO RD W64 over Drainage Ditch?

It is owned by the County Highway Agency.