US Bridges

Indigo Ave over Drainage Ditch #3

Good

Franklin County, Iowa · 091210902 · Structure no. 000000000157081

Built
2012
13 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
21
2022 count
Owner
County
County Highway Agency

About this bridge

Indigo Ave over Drainage Ditch #3 is a concrete continuous culvert carrying Indigo Ave over Drainage Ditch #3 in Franklin County, Iowa. It was built in 2012, so it is 13 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 21 vehicles a day, projected to reach 21 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIndigo Ave
CrossesDrainage Ditch #3
Location091210902
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.70623, -93.34065
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating91.7 US tons
Inventory rating55 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2022)
Projected traffic21 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Indigo Ave over Drainage Ditch #3 built?

It was built in 2012, making it 13 years old in 2025.

What condition is Indigo Ave over Drainage Ditch #3 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 2024.

How much traffic does Indigo Ave over Drainage Ditch #3 carry?

About 21 vehicles per day (2022 count).

How long is Indigo Ave over Drainage Ditch #3?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Indigo Ave over Drainage Ditch #3?

It is owned by the County Highway Agency.