US Bridges

East ST over Drainage Ditch

Fair

Dallas County, Iowa · 078272800 · Structure no. 000000000022180

Built
1955
70 years old
Condition
Fair
inspected January 2023
Type
Culvert
Concrete Continuous
Length
35 ft
3 main spans
Daily traffic
1,611
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

East ST over Drainage Ditch is a concrete continuous culvert carrying East ST over Drainage Ditch in Dallas County, Iowa. It was built in 1955, so it is 70 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 1,611 vehicles a day, projected to reach 1,611 by 2043. The structure is 35 ft (10.7 m) long and 30 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesEast ST
CrossesDrainage Ditch
Location078272800
RouteCity Street 0
CountyDallas County
StateIowa
Coordinates41.53061, -93.94984
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 inspectionJanuary 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating45.3 US tons
Inventory rating27.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length35 ft (10.7 m)
Longest span11 ft (3.4 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,611 (2022)
Projected traffic1,611 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 East ST over Drainage Ditch built?

It was built in 1955, making it 70 years old in 2025.

What condition is East 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 January 2023.

How much traffic does East ST over Drainage Ditch carry?

About 1,611 vehicles per day (2022 count).

How long is East ST over Drainage Ditch?

The structure is 35 ft (10.7 m) long with a longest span of 11 ft (3.4 m) and a deck 30 ft wide.

Who owns East ST over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.