US Bridges

Fm- 610th ST over Overflow Channel

Fair

Cherokee County, Iowa · 090390901 · Structure no. 000000000107030

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
1,017
2022 count
Owner
County
County Highway Agency

About this bridge

Fm- 610th ST over Overflow Channel is a concrete continuous culvert carrying Fm- 610th ST over Overflow Channel in Cherokee County, Iowa. It was built in 1970, so it is 55 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,017 vehicles a day, roughly 18% of them trucks, projected to reach 1,017 by 2043. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFm- 610th ST
CrossesOverflow Channel
Location090390901
RouteCounty Highway 0
CountyCherokee County
StateIowa
Coordinates42.63429, -95.45243
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,017 (2022)
Projected traffic1,017 by 2043
Trucks18%
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$30,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fm- 610th ST over Overflow Channel built?

It was built in 1970, making it 55 years old in 2025.

What condition is Fm- 610th ST over Overflow Channel in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does Fm- 610th ST over Overflow Channel carry?

About 1,017 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Fm- 610th ST over Overflow Channel?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m).

Who owns Fm- 610th ST over Overflow Channel?

It is owned by the County Highway Agency.