US Bridges

S18 Eagle Ave over Willow Creek

Good

Cerro Gordo County, Iowa · 097223504 · Structure no. 000000000106982

Built
2019
6 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
727
2022 count
Owner
County
County Highway Agency

About this bridge

S18 Eagle Ave over Willow Creek is a concrete culvert carrying S18 Eagle Ave 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 727 vehicles a day, roughly 11% of them trucks, projected to reach 727 by 2044. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS18 Eagle Ave
CrossesWillow Creek
Location097223504
RouteCounty Highway 0
CountyCerro Gordo County
StateIowa
Coordinates43.1713, -93.41852
Functional classRural Minor 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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic727 (2022)
Projected traffic727 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 S18 Eagle Ave over Willow Creek built?

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

What condition is S18 Eagle Ave 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 February 2024.

How much traffic does S18 Eagle Ave over Willow Creek carry?

About 727 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is S18 Eagle Ave over Willow Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns S18 Eagle Ave over Willow Creek?

It is owned by the County Highway Agency.