US Bridges

Ia 4 over Drainage Ditch #110

Good

Greene County, Iowa · 6 Mi. N of Jct. US 30 · Structure no. 000000000025701

Built
1993
32 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
1,950
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 4 over Drainage Ditch #110 is a concrete continuous culvert carrying Ia 4 over Drainage Ditch #110 in Greene County, Iowa. It was built in 1993, so it is 32 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 1,950 vehicles a day, roughly 13% of them trucks, projected to reach 1,950 by 2042. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesIa 4
CrossesDrainage Ditch #110
Location6 Mi. N of Jct. US 30
RouteState Highway 4
StateIowa
Coordinates42.1228, -94.37797
Functional classRural Minor Arterial

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating34.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,950 (2022)
Projected traffic1,950 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Ia 4 over Drainage Ditch #110 built?

It was built in 1993, making it 32 years old in 2025.

What condition is Ia 4 over Drainage Ditch #110 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 March 2023.

How much traffic does Ia 4 over Drainage Ditch #110 carry?

About 1,950 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Ia 4 over Drainage Ditch #110?

The structure is 32 ft (9.8 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 4 over Drainage Ditch #110?

It is owned by the State Highway Agency.