US Bridges

Montague RD over Waubonsie CR

Good

Mills County, Iowa · 072423304 · Structure no. 000000000246181

Built
2016
9 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
29
2022 count
Owner
County
County Highway Agency

About this bridge

Montague RD over Waubonsie CR is a concrete continuous culvert carrying Montague RD over Waubonsie CR in Mills County, Iowa. It was built in 2016, so it is 9 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 29 vehicles a day, projected to reach 29 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMontague RD
CrossesWaubonsie CR
Location072423304
RouteCounty Highway 0
CountyMills County
StateIowa
Coordinates40.98773, -95.69032
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2043
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Montague RD over Waubonsie CR built?

It was built in 2016, making it 9 years old in 2025.

What condition is Montague RD over Waubonsie CR 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 March 2023.

How much traffic does Montague RD over Waubonsie CR carry?

About 29 vehicles per day (2022 count).

How long is Montague RD over Waubonsie CR?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m).

Who owns Montague RD over Waubonsie CR?

It is owned by the County Highway Agency.