US Bridges

210th ST over Unnamed Drainage

Good

Winneshiek County, Iowa · S11 T97 R09 · Structure no. 000000000346971

Built
2023
2 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
44
2022 count
Owner
County
County Highway Agency

About this bridge

210th ST over Unnamed Drainage is a concrete continuous slab carrying 210th ST over Unnamed Drainage in Winneshiek County, Iowa. It was built in 2023, so it is 2 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 44 vehicles a day, projected to reach 44 by 2044. The structure is 70 ft (21.3 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries210th ST
CrossesUnnamed Drainage
LocationS11 T97 R09
RouteCounty Highway 0
StateIowa
Coordinates43.24148, -91.87878
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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span28 ft (8.5 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2022)
Projected traffic44 by 2044
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 210th ST over Unnamed Drainage built?

It was built in 2023, making it 2 years old in 2025.

What condition is 210th ST over Unnamed Drainage 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 March 2024.

How much traffic does 210th ST over Unnamed Drainage carry?

About 44 vehicles per day (2022 count).

How long is 210th ST over Unnamed Drainage?

The structure is 70 ft (21.3 m) long with a longest span of 28 ft (8.5 m) and a deck 27 ft wide.

Who owns 210th ST over Unnamed Drainage?

It is owned by the County Highway Agency.