US Bridges

160th ST over Drainage Ditch

Good

Hamilton County, Iowa · 089230201 · Structure no. 000000000172041

Built
2010
15 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

160th ST over Drainage Ditch is a concrete continuous culvert carrying 160th ST over Drainage Ditch in Hamilton County, Iowa. It was built in 2010, so it is 15 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 30 vehicles a day, projected to reach 30 by 2044. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries160th ST
CrossesDrainage Ditch
Location089230201
RouteCounty Highway 0
CountyHamilton County
StateIowa
Coordinates42.55771, -93.53078
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 160th ST over Drainage Ditch built?

It was built in 2010, making it 15 years old in 2025.

What condition is 160th ST 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 February 2024.

How much traffic does 160th ST over Drainage Ditch carry?

About 30 vehicles per day (2022 count).

How long is 160th ST over Drainage Ditch?

The structure is 31 ft (9.4 m) long with a longest span of 14 ft (4.3 m).

Who owns 160th ST over Drainage Ditch?

It is owned by the County Highway Agency.