US Bridges

SB US 65 over Willow Creek

Fair

Cerro Gordo County, Iowa · 0.2 Mi. N of WB Ia 122 · Structure no. 000000000018934

Built
1968
57 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
132 ft
3 main spans
Daily traffic
3,200
2022 count
Owner
State
State Highway Agency

About this bridge

SB US 65 over Willow Creek is a concrete continuous slab carrying SB US 65 over Willow Creek in Cerro Gordo County, Iowa. It was built in 1968, so it is 57 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 6 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 3,200 vehicles a day, roughly 3% of them trucks, projected to reach 3,200 by 2044. The structure is 132 ft (40.2 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB US 65
CrossesWillow Creek
Location0.2 Mi. N of WB Ia 122
RouteU.S. Route 65
StateIowa
Coordinates43.14972, -93.20266
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.3 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length132 ft (40.2 m)
Longest span50 ft (15.2 m)
Deck width56 ft (17.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2022)
Projected traffic3,200 by 2044
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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 SB US 65 over Willow Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is SB US 65 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 March 2024.

How much traffic does SB US 65 over Willow Creek carry?

About 3,200 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is SB US 65 over Willow Creek?

The structure is 132 ft (40.2 m) long with a longest span of 50 ft (15.2 m) and a deck 56 ft wide.

Who owns SB US 65 over Willow Creek?

It is owned by the State Highway Agency.