US Bridges

K64 over Side Ditch Stream

Fair

Woodbury County, Iowa · At JCT SR K64 & US 20 · Structure no. 000000000053190

Built
1959
66 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
10
2022 count
Owner
State
State Highway Agency

About this bridge

K64 over Side Ditch Stream is a concrete continuous culvert carrying K64 over Side Ditch Stream in Woodbury County, Iowa. It was built in 1959, so it is 66 years old, older 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 10 vehicles a day, roughly 14% of them trucks, projected to reach 10 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesK64
CrossesSide Ditch Stream
LocationAt JCT SR K64 & US 20
RouteCounty Highway 0
CountyWoodbury County
StateIowa
Coordinates42.48149, -96.07584
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemNo

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 K64 over Side Ditch Stream built?

It was built in 1959, making it 66 years old in 2025.

What condition is K64 over Side Ditch Stream 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 December 2024.

How much traffic does K64 over Side Ditch Stream carry?

About 10 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is K64 over Side Ditch Stream?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns K64 over Side Ditch Stream?

It is owned by the State Highway Agency.