US Bridges

C28 165th ST over Waterway

Good

Bremer County, Iowa · 092120203 · Structure no. 000000000079461

Built
2018
7 years old
Condition
Good
inspected April 2022
Type
Slab
Concrete Continuous
Length
140 ft
3 main spans
Daily traffic
177
2022 count
Owner
County
County Highway Agency

About this bridge

C28 165th ST over Waterway is a concrete continuous slab carrying C28 165th ST over Waterway in Bremer County, Iowa. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 177 vehicles a day, projected to reach 177 by 2043. The structure is 140 ft (42.7 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesC28 165th ST
CrossesWaterway
Location092120203
RouteCounty Highway 0
CountyBremer County
StateIowa
Coordinates42.8061, -92.23085
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length140 ft (42.7 m)
Longest span55 ft (16.8 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic177 (2022)
Projected traffic177 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 C28 165th ST over Waterway built?

It was built in 2018, making it 7 years old in 2025.

What condition is C28 165th ST over Waterway 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 2022.

How much traffic does C28 165th ST over Waterway carry?

About 177 vehicles per day (2022 count).

How long is C28 165th ST over Waterway?

The structure is 140 ft (42.7 m) long with a longest span of 55 ft (16.8 m) and a deck 33 ft wide.

Who owns C28 165th ST over Waterway?

It is owned by the County Highway Agency.