US Bridges

CO RD W64 over Davis Creek

Good

Washington County, Iowa · 077063402 · Structure no. 000000000051561

Built
2004
21 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
126 ft
3 main spans
Daily traffic
790
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD W64 over Davis Creek is a prestressed concrete stringer/multi-beam or girder carrying CO RD W64 over Davis Creek in Washington County, Iowa. It was built in 2004, so it is 21 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 790 vehicles a day, roughly 8% of them trucks, projected to reach 790 by 2043. The structure is 126 ft (38.4 m) long and 33 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesCO RD W64
CrossesDavis Creek
Location077063402
RouteCounty Highway 0
StateIowa
Coordinates41.43056, -91.54169
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79 US tons
Inventory rating47.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span48 ft (14.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic790 (2022)
Projected traffic790 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 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 Davis Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is CO RD W64 over Davis 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 February 2023.

How much traffic does CO RD W64 over Davis Creek carry?

About 790 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is CO RD W64 over Davis Creek?

The structure is 126 ft (38.4 m) long with a longest span of 48 ft (14.6 m) and a deck 33 ft wide.

Who owns CO RD W64 over Davis Creek?

It is owned by the County Highway Agency.