US Bridges

M31 (quail Ave) over Unnamed Creek

Good

Ida County, Iowa · 088390102 · Structure no. 000000000186561

Built
2012
13 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
369
2022 count
Owner
County
County Highway Agency

About this bridge

M31 (quail Ave) over Unnamed Creek is a concrete continuous culvert carrying M31 (quail Ave) over Unnamed Creek in Ida 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 369 vehicles a day, projected to reach 369 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesM31 (quail Ave)
CrossesUnnamed Creek
Location088390102
RouteCounty Highway 0
CountyIda County
StateIowa
Coordinates42.46249, -95.34182
Functional classRural Major 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 inspectionJanuary 2024
Inspection intervalevery 48 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 rating48.6 US tons
Inventory rating36 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 traffic369 (2022)
Projected traffic369 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was M31 (quail Ave) over Unnamed Creek built?

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

What condition is M31 (quail Ave) over Unnamed 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 January 2024.

How much traffic does M31 (quail Ave) over Unnamed Creek carry?

About 369 vehicles per day (2022 count).

How long is M31 (quail Ave) over Unnamed Creek?

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

Who owns M31 (quail Ave) over Unnamed Creek?

It is owned by the County Highway Agency.