US Bridges

Hawthorne Ave over Field Stream

Good

Carroll County, Iowa · 083352904 · Structure no. 000000000094732

Built
2011
14 years old
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

Hawthorne Ave over Field Stream is a steel stringer/multi-beam or girder carrying Hawthorne Ave over Field Stream in Carroll County, Iowa. It was built in 2011, so it is 14 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 60 vehicles a day, projected to reach 60 by 2043. The structure is 33 ft (10.2 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHawthorne Ave
CrossesField Stream
Location083352904
RouteCounty Highway 0
CountyCarroll County
StateIowa
Coordinates41.96991, -94.95663
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.1 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.2 m)
Longest span33 ft (10.1 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2043
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hawthorne Ave over Field Stream built?

It was built in 2011, making it 14 years old in 2025.

What condition is Hawthorne Ave over Field 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 August 2022.

How much traffic does Hawthorne Ave over Field Stream carry?

About 60 vehicles per day (2022 count).

How long is Hawthorne Ave over Field Stream?

The structure is 33 ft (10.2 m) long with a longest span of 33 ft (10.1 m) and a deck 31 ft wide.

Who owns Hawthorne Ave over Field Stream?

It is owned by the County Highway Agency.