US Bridges

Ia 122 EB over Willow Creek

FairClosed to traffic

Cerro Gordo County, Iowa · 4.4 Mi. E of Jct. I-35 · Structure no. 000000000018780

Built
1933
92 years old, rebuilt 1963
Condition
Fair
inspected July 2022
Type
Slab
Concrete Continuous
Length
53 ft
2 main spans
Daily traffic
6,850
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 122 EB over Willow Creek is a concrete continuous slab carrying Ia 122 EB over Willow Creek in Cerro Gordo County, Iowa. It was built in 1933 and reconstructed in 1963, 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. Its operating status is: closed to all traffic.

It carries about 6,850 vehicles a day, roughly 4% of them trucks, projected to reach 6,850 by 2042. The structure is 53 ft (16.2 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIa 122 EB
CrossesWillow Creek
Location4.4 Mi. E of Jct. I-35
RouteState Highway 122
CountyCerro Gordo County
StateIowa
Coordinates43.14824, -93.26902
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2022
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating28.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length53 ft (16.2 m)
Longest span24 ft (7.3 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,850 (2022)
Projected traffic6,850 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ia 122 EB over Willow Creek built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1963.

What condition is Ia 122 EB over Willow Creek 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 July 2022.

How much traffic does Ia 122 EB over Willow Creek carry?

About 6,850 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Ia 122 EB over Willow Creek?

The structure is 53 ft (16.2 m) long with a longest span of 24 ft (7.3 m) and a deck 44 ft wide.

Who owns Ia 122 EB over Willow Creek?

It is owned by the State Highway Agency.