US Bridges

Wilson ST over Drainage

Good

Dallas County, Iowa · 078272700 · Structure no. 000000000011490

Built
2007
18 years old
Condition
Good
inspected January 2021
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
373
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Wilson ST over Drainage is a concrete continuous culvert carrying Wilson ST over Drainage in Dallas County, Iowa. It was built in 2007, so it is 18 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 373 vehicles a day, projected to reach 373 by 2043. The structure is 40 ft (12.2 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWilson ST
CrossesDrainage
Location078272700
RouteCity Street 0
StateIowa
Coordinates41.53021, -93.95461
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckOther
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.7 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic373 (2022)
Projected traffic373 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wilson ST over Drainage built?

It was built in 2007, making it 18 years old in 2025.

What condition is Wilson ST over Drainage 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 January 2021.

How much traffic does Wilson ST over Drainage carry?

About 373 vehicles per day (2022 count).

How long is Wilson ST over Drainage?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.7 m) and a deck 30 ft wide.

Who owns Wilson ST over Drainage?

It is owned by the City or Municipal Highway Agency.