US Bridges

US 61 over Drainage Ditch

Good

Jackson County, Iowa · 0.1 Mi. N of Jct. SR Y53 · Structure no. 000000000030160

Built
1967
58 years old, rebuilt 1999
Condition
Good
inspected December 2023
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
8,100
2022 count
Owner
State
State Highway Agency

About this bridge

US 61 over Drainage Ditch is a concrete continuous culvert carrying US 61 over Drainage Ditch in Jackson County, Iowa. It was built in 1967 and reconstructed in 1999, so it is 58 years old, older 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 8,100 vehicles a day, roughly 22% of them trucks, projected to reach 8,100 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 61
CrossesDrainage Ditch
Location0.1 Mi. N of Jct. SR Y53
RouteU.S. Route 61
StateIowa
Coordinates42.09834, -90.68275
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length34 ft (10.4 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 traffic8,100 (2022)
Projected traffic8,100 by 2043
Trucks22%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 US 61 over Drainage Ditch built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1999.

What condition is US 61 over Drainage Ditch 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 December 2023.

How much traffic does US 61 over Drainage Ditch carry?

About 8,100 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is US 61 over Drainage Ditch?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m).

Who owns US 61 over Drainage Ditch?

It is owned by the State Highway Agency.