US Bridges

Hawthorne Av over Stream

Good

Bremer County, Iowa · 092132902 · Structure no. 000000000079831

Built
2002
23 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
29
2022 count
Owner
County
County Highway Agency

About this bridge

Hawthorne Av over Stream is a prestressed concrete tee beam carrying Hawthorne Av over Stream in Bremer County, Iowa. It was built in 2002, so it is 23 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 29 vehicles a day, projected to reach 29 by 2044. The structure is 25 ft (7.6 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHawthorne Av
CrossesStream
Location092132902
RouteCounty Highway 0
StateIowa
Coordinates42.75244, -92.41536
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating71.8 US tons
Inventory rating43 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2044
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hawthorne Av over Stream built?

It was built in 2002, making it 23 years old in 2025.

What condition is Hawthorne Av 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 April 2024.

How much traffic does Hawthorne Av over Stream carry?

About 29 vehicles per day (2022 count).

How long is Hawthorne Av over Stream?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns Hawthorne Av over Stream?

It is owned by the County Highway Agency.