US Bridges

590th Ave over Ovrflw of Milford 13

Good

Story County, Iowa · 0.33 Mi. S of NW Co. · Structure no. 000000000315361

Built
2017
8 years old
Condition
Good
inspected December 2022
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

590th Ave over Ovrflw of Milford 13 is a concrete continuous culvert carrying 590th Ave over Ovrflw of Milford 13 in Story County, Iowa. It was built in 2017, so it is 8 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 45 vehicles a day, projected to reach 45 by 2043. The structure is 25 ft (7.5 m) long.

Carries590th Ave
CrossesOvrflw of Milford 13
Location0.33 Mi. S of NW Co.
RouteCounty Highway 0
StateIowa
Coordinates42.07134, -93.52142
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 inspectionDecember 2022
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 rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length25 ft (7.5 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 traffic45 (2022)
Projected traffic45 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 590th Ave over Ovrflw of Milford 13 built?

It was built in 2017, making it 8 years old in 2025.

What condition is 590th Ave over Ovrflw of Milford 13 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 December 2022.

How much traffic does 590th Ave over Ovrflw of Milford 13 carry?

About 45 vehicles per day (2022 count).

How long is 590th Ave over Ovrflw of Milford 13?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).

Who owns 590th Ave over Ovrflw of Milford 13?

It is owned by the County Highway Agency.