US Bridges

432nd Avenue over N Branch of Elk River

Good

Clinton County, Iowa · 083E60304 · Structure no. 000000000125591

Built
1998
27 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
73
2022 count
Owner
County
County Highway Agency

About this bridge

432nd Avenue over N Branch of Elk River is a concrete continuous slab carrying 432nd Avenue over N Branch of Elk River in Clinton County, Iowa. It was built in 1998, so it is 27 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 73 vehicles a day, projected to reach 73 by 2045. The structure is 100 ft (30.5 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries432nd Avenue
CrossesN Branch of Elk River
Location083E60304
RouteCounty Highway 0
StateIowa
Coordinates42.02022, -90.24777
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.3 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span39 ft (11.9 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2022)
Projected traffic73 by 2045
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 432nd Avenue over N Branch of Elk River built?

It was built in 1998, making it 27 years old in 2025.

What condition is 432nd Avenue over N Branch of Elk River 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 January 2025.

How much traffic does 432nd Avenue over N Branch of Elk River carry?

About 73 vehicles per day (2022 count).

How long is 432nd Avenue over N Branch of Elk River?

The structure is 100 ft (30.5 m) long with a longest span of 39 ft (11.9 m) and a deck 33 ft wide.

Who owns 432nd Avenue over N Branch of Elk River?

It is owned by the County Highway Agency.