US Bridges

FM - 180th Ave over Small Stream

Good

Delaware County, Iowa · 088050506 · Structure no. 000000000140860

Built
1973
52 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
960
2021 count
Owner
County
County Highway Agency

About this bridge

FM - 180th Ave over Small Stream is a concrete culvert carrying FM - 180th Ave over Small Stream in Delaware County, Iowa. It was built in 1973, so it is 52 years old, older 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 960 vehicles a day, projected to reach 960 by 2043. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM - 180th Ave
CrossesSmall Stream
Location088050506
RouteCounty Highway 0
CountyDelaware County
StateIowa
Coordinates42.46716, -91.45419
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length27 ft (8.2 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic960 (2021)
Projected traffic960 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM - 180th Ave over Small Stream built?

It was built in 1973, making it 52 years old in 2025.

What condition is FM - 180th Ave over Small Stream 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 April 2023.

How much traffic does FM - 180th Ave over Small Stream carry?

About 960 vehicles per day (2021 count).

How long is FM - 180th Ave over Small Stream?

The structure is 27 ft (8.2 m) long with a longest span of 14 ft (4.3 m).

Who owns FM - 180th Ave over Small Stream?

It is owned by the County Highway Agency.