US Bridges

D 36 (255th St) over Drainage Ditch

Fair

Sac County, Iowa · 088372403 · Structure no. 000000000365825

Built
1933
92 years old, rebuilt 1978
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
679
2022 count
Owner
County
County Highway Agency

About this bridge

D 36 (255th St) over Drainage Ditch is a concrete continuous culvert carrying D 36 (255th St) over Drainage Ditch in Sac County, Iowa. It was built in 1933 and reconstructed in 1978, so it is 92 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 5 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 679 vehicles a day, projected to reach 679 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesD 36 (255th St)
CrossesDrainage Ditch
Location088372403
RouteCounty Highway 0
CountySac County
StateIowa
Coordinates42.42209, -95.10405
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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.5 US tons
Inventory rating29 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length25 ft (7.6 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 traffic679 (2022)
Projected traffic679 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$446,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was D 36 (255th St) over Drainage Ditch built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1978.

What condition is D 36 (255th St) over Drainage Ditch 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 August 2023.

How much traffic does D 36 (255th St) over Drainage Ditch carry?

About 679 vehicles per day (2022 count).

How long is D 36 (255th St) over Drainage Ditch?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns D 36 (255th St) over Drainage Ditch?

It is owned by the County Highway Agency.