US Bridges

Hawk Ave over Stream

Good

Clayton County, Iowa · 1 Mile N of HWY 18 · Structure no. 000000000121061

Built
2020
5 years old
Condition
Good
inspected June 2024
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

Hawk Ave over Stream is a steel culvert carrying Hawk Ave over Stream in Clayton County, Iowa. It was built in 2020, so it is 5 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 30 vehicles a day, roughly 13% of them trucks, projected to reach 30 by 2044. The structure is 21 ft (6.4 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesHawk Ave
CrossesStream
Location1 Mile N of HWY 18
RouteCounty Highway 0
CountyClayton County
StateIowa
Coordinates43.01882, -91.31036
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadOther
Structure length21 ft (6.4 m)
Longest span9 ft (2.7 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Hawk Ave over Stream built?

It was built in 2020, making it 5 years old in 2025.

What condition is Hawk Ave over 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 June 2024.

How much traffic does Hawk Ave over Stream carry?

About 30 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Hawk Ave over Stream?

The structure is 21 ft (6.4 m) long with a longest span of 9 ft (2.7 m) and a deck 26 ft wide.

Who owns Hawk Ave over Stream?

It is owned by the County Highway Agency.