US Bridges

Nature Ave over Willow Creek

Good

Plymouth County, Iowa · 9345360220 · Structure no. 000000000276871

Built
2018
7 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
130 ft
1 main span
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

Nature Ave over Willow Creek is a concrete continuous slab carrying Nature Ave over Willow Creek in Plymouth County, Iowa. It was built in 2018, so it is 7 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 30 vehicles a day, projected to reach 30 by 2044. The structure is 130 ft (39.6 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNature Ave
CrossesWillow Creek
Location9345360220
RouteCounty Highway 0
CountyPlymouth County
StateIowa
Coordinates42.82818, -96.11522
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length130 ft (39.6 m)
Longest span51 ft (15.5 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Nature Ave over Willow Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is Nature 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 June 2023.

How much traffic does Nature Ave over Willow Creek carry?

About 30 vehicles per day (2022 count).

How long is Nature Ave over Willow Creek?

The structure is 130 ft (39.6 m) long with a longest span of 51 ft (15.5 m) and a deck 33 ft wide.

Who owns Nature Ave over Willow Creek?

It is owned by the County Highway Agency.