US Bridges

120th ST over Indian Creek

Good

Plymouth County, Iowa · 93471701104200 · Structure no. 000000000277301

Built
2021
4 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
5
2022 count
Owner
County
County Highway Agency

About this bridge

120th ST over Indian Creek is a concrete culvert carrying 120th ST over Indian Creek in Plymouth County, Iowa. It was built in 2021, so it is 4 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 5 vehicles a day, projected to reach 5 by 2043. The structure is 24 ft (7.3 m) long.

Carries120th ST
CrossesIndian Creek
Location93471701104200
RouteCounty Highway 0
StateIowa
Coordinates42.88002, -96.42233
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)
Projected traffic5 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$169,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 120th ST over Indian Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is 120th ST over Indian 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 August 2023.

How much traffic does 120th ST over Indian Creek carry?

About 5 vehicles per day (2022 count).

How long is 120th ST over Indian Creek?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m).

Who owns 120th ST over Indian Creek?

It is owned by the County Highway Agency.