US Bridges

NE 112th ST over Drainage Ditch #38

Good

Polk County, Iowa · 080221302 · Structure no. 000000000281621

Built
2001
24 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
409
2022 count
Owner
County
County Highway Agency

About this bridge

NE 112th ST over Drainage Ditch #38 is a concrete continuous culvert carrying NE 112th ST over Drainage Ditch #38 in Polk County, Iowa. It was built in 2001, so it is 24 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 409 vehicles a day, roughly 16% of them trucks, projected to reach 409 by 2044. The structure is 46 ft (14 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNE 112th ST
CrossesDrainage Ditch #38
Location080221302
RouteCounty Highway 0
StateIowa
Coordinates41.74101, -93.36768
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.3 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length46 ft (14 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 traffic409 (2022)
Projected traffic409 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NE 112th ST over Drainage Ditch #38 built?

It was built in 2001, making it 24 years old in 2025.

What condition is NE 112th ST over Drainage Ditch #38 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 September 2024.

How much traffic does NE 112th ST over Drainage Ditch #38 carry?

About 409 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is NE 112th ST over Drainage Ditch #38?

The structure is 46 ft (14 m) long with a longest span of 12 ft (3.7 m).

Who owns NE 112th ST over Drainage Ditch #38?

It is owned by the County Highway Agency.