US Bridges

Y 44 170th Ave over Small Stream

Good

Clinton County, Iowa · 082E22902 · Structure no. 000000000123341

Built
2013
12 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
43 ft
1 main span
Daily traffic
470
2022 count
Owner
County
County Highway Agency

About this bridge

Y 44 170th Ave over Small Stream is a steel stringer/multi-beam or girder carrying Y 44 170th Ave over Small Stream in Clinton County, Iowa. It was built in 2013, so it is 12 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 470 vehicles a day, roughly 14% of them trucks, projected to reach 470 by 2044. The structure is 43 ft (13.1 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesY 44 170th Ave
CrossesSmall Stream
Location082E22902
RouteCounty Highway 0
CountyClinton County
StateIowa
Coordinates41.88191, -90.76242
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating85 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic470 (2022)
Projected traffic470 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Y 44 170th Ave over Small Stream built?

It was built in 2013, making it 12 years old in 2025.

What condition is Y 44 170th 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 March 2024.

How much traffic does Y 44 170th Ave over Small Stream carry?

About 470 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Y 44 170th Ave over Small Stream?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns Y 44 170th Ave over Small Stream?

It is owned by the County Highway Agency.