US Bridges

210th Ave over Little Sioux River

PoorClosed to traffic

Clay County, Iowa · 096370102 · Structure no. 000000000116790

Built
1915
110 years old
Condition
Poor
inspected April 2023
Type
Truss - Thru
Steel
Length
180 ft
1 main span
Daily traffic
62
2022 count
Owner
County
County Highway Agency

About this bridge

210th Ave over Little Sioux River is a steel truss - thru carrying 210th Ave over Little Sioux River in Clay County, Iowa. It was built in 1915, so it is 110 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 0 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 62 vehicles a day, projected to reach 62 by 2043. The structure is 180 ft (54.9 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries210th Ave
CrossesLittle Sioux River
Location096370102
RouteCounty Highway 0
CountyClay County
StateIowa
Coordinates43.16267, -95.1703
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure0 FailedOut of service and beyond corrective action.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length180 ft (54.9 m)
Longest span177 ft (54 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deck11 ft (3.4 m)

Traffic and service

Average daily traffic62 (2022)
Projected traffic62 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 210th Ave over Little Sioux River built?

It was built in 1915, making it 110 years old in 2025.

What condition is 210th Ave over Little Sioux River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does 210th Ave over Little Sioux River carry?

About 62 vehicles per day (2022 count).

How long is 210th Ave over Little Sioux River?

The structure is 180 ft (54.9 m) long with a longest span of 177 ft (54 m) and a deck 18 ft wide.

Who owns 210th Ave over Little Sioux River?

It is owned by the County Highway Agency.