US Bridges

Main ST over Drainage Ditch

Good

Cedar County, Iowa · 000000000 · Structure no. 000000000018431

Built
1978
47 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
3,067
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main ST over Drainage Ditch is a concrete continuous culvert carrying Main ST over Drainage Ditch in Cedar County, Iowa. It was built in 1978, so it is 47 years old, older 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 3,067 vehicles a day, projected to reach 3,067 by 2042. The structure is 21 ft (6.4 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesMain ST
CrossesDrainage Ditch
Location000000000
RouteCity Street 0
CountyCedar County
StateIowa
Coordinates41.67128, -91.36179
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,067 (2022)
Projected traffic3,067 by 2042
Trucks0%
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

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 Main ST over Drainage Ditch built?

It was built in 1978, making it 47 years old in 2025.

What condition is Main 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 June 2023.

How much traffic does Main ST over Drainage Ditch carry?

About 3,067 vehicles per day (2022 count).

How long is Main ST over Drainage Ditch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 35 ft wide.

Who owns Main ST over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.