US Bridges

235th ST over Mccandless-Cleghorn

Good

Monona County, Iowa · 083450803 · Structure no. 000000000363116

Built
2021
4 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete Continuous
Length
71 ft
3 main spans
Daily traffic
150
2022 count
Owner
County
County Highway Agency

About this bridge

235th ST over Mccandless-Cleghorn is a concrete continuous slab carrying 235th ST over Mccandless-Cleghorn in Monona County, Iowa. It was built in 2021, so it is 4 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 150 vehicles a day, projected to reach 150 by 2044. The structure is 71 ft (21.6 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries235th ST
CrossesMccandless-Cleghorn
Location083450803
RouteCounty Highway 0
StateIowa
Coordinates42.01609, -96.11537
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 protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length71 ft (21.6 m)
Longest span28 ft (8.5 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic150 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 235th ST over Mccandless-Cleghorn built?

It was built in 2021, making it 4 years old in 2025.

What condition is 235th ST over Mccandless-Cleghorn 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 May 2024.

How much traffic does 235th ST over Mccandless-Cleghorn carry?

About 150 vehicles per day (2022 count).

How long is 235th ST over Mccandless-Cleghorn?

The structure is 71 ft (21.6 m) long with a longest span of 28 ft (8.5 m) and a deck 33 ft wide.

Who owns 235th ST over Mccandless-Cleghorn?

It is owned by the County Highway Agency.