US Bridges

Ridge Drive over Trib to Twelve Mile Cree

Good

Union County, Iowa · 071290100 · Structure no. 000000000366880

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Culvert
Steel
Length
25 ft
2 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

Ridge Drive over Trib to Twelve Mile Cree is a steel culvert carrying Ridge Drive over Trib to Twelve Mile Cree in Union 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 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 50 vehicles a day, projected to reach 50 by 2043. 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
CarriesRidge Drive
CrossesTrib to Twelve Mile Cree
Location071290100
RouteCounty Highway 0
CountyUnion County
StateIowa
Coordinates40.97084, -94.13335
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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
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 alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length25 ft (7.6 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 traffic50 (2022)
Projected traffic50 by 2043
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$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ridge Drive over Trib to Twelve Mile Cree built?

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

What condition is Ridge Drive over Trib to Twelve Mile Cree 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 October 2023.

How much traffic does Ridge Drive over Trib to Twelve Mile Cree carry?

About 50 vehicles per day (2022 count).

How long is Ridge Drive over Trib to Twelve Mile Cree?

The structure is 25 ft (7.6 m) long with a longest span of 10 ft (3 m).

Who owns Ridge Drive over Trib to Twelve Mile Cree?

It is owned by the County Highway Agency.