US Bridges

12th ST NW over Willow Creek

Good

Cerro Gordo County, Iowa · 0.1 MI E & W Taft Ave · Structure no. 000000000008021

Built
2019
6 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
97 ft
1 main span
Daily traffic
8,292
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

12th ST NW over Willow Creek is a prestressed concrete stringer/multi-beam or girder carrying 12th ST NW over Willow Creek in Cerro Gordo County, Iowa. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,292 vehicles a day, projected to reach 8,292 by 2044. The structure is 97 ft (29.6 m) long and 52 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries12th ST NW
CrossesWillow Creek
Location0.1 MI E & W Taft Ave
RouteCity Street 0
CountyCerro Gordo County
StateIowa
Coordinates43.16276, -93.2391
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length97 ft (29.6 m)
Longest span97 ft (29.6 m)
Deck width52 ft (15.9 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,292 (2022)
Projected traffic8,292 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 12th ST NW over Willow Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is 12th ST NW over Willow Creek 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 2024.

How much traffic does 12th ST NW over Willow Creek carry?

About 8,292 vehicles per day (2022 count).

How long is 12th ST NW over Willow Creek?

The structure is 97 ft (29.6 m) long with a longest span of 97 ft (29.6 m) and a deck 52 ft wide.

Who owns 12th ST NW over Willow Creek?

It is owned by the City or Municipal Highway Agency.