US Bridges

Fm- 610th ST over Maple River

Fair

Cherokee County, Iowa · 090390801 · Structure no. 000000000107021

Built
1995
30 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
164 ft
3 main spans
Daily traffic
1,017
2022 count
Owner
County
County Highway Agency

About this bridge

Fm- 610th ST over Maple River is a prestressed concrete stringer/multi-beam or girder carrying Fm- 610th ST over Maple River in Cherokee County, Iowa. It was built in 1995, so it is 30 years old, younger 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 6 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 164 ft (50 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFm- 610th ST
CrossesMaple River
Location090390801
RouteCounty Highway 0
CountyCherokee County
StateIowa
Coordinates42.6344, -95.46912
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: 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 rating76.7 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length164 ft (50 m)
Longest span59 ft (18 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 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 Maple River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Fm- 610th ST over Maple River 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 Maple River carry?

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

How long is Fm- 610th ST over Maple River?

The structure is 164 ft (50 m) long with a longest span of 59 ft (18 m) and a deck 33 ft wide.

Who owns Fm- 610th ST over Maple River?

It is owned by the County Highway Agency.