US Bridges

Indigo Ave over Spring Creek

Good

Franklin County, Iowa · 92212102 · Structure no. 000000000157821

Built
2023
2 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
59
2022 count
Owner
County
County Highway Agency

About this bridge

Indigo Ave over Spring Creek is a concrete continuous culvert carrying Indigo Ave over Spring Creek in Franklin County, Iowa. It was built in 2023, so it is 2 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 59 vehicles a day, projected to reach 59 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIndigo Ave
CrossesSpring Creek
Location92212102
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.76978, -93.34031
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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length21 ft (6.4 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 traffic59 (2022)
Projected traffic59 by 2044
Trucks0%
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$175,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Indigo Ave over Spring Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Indigo Ave over Spring 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 July 2024.

How much traffic does Indigo Ave over Spring Creek carry?

About 59 vehicles per day (2022 count).

How long is Indigo Ave over Spring Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns Indigo Ave over Spring Creek?

It is owned by the County Highway Agency.