US Bridges

410th ST over Small Stream

Good

Sioux County, Iowa · 095451501 · Structure no. 000000000310251

Built
2007
18 years old
Condition
Good
inspected March 2024
Type
Culvert
Steel
Length
33 ft
2 main spans
Daily traffic
159
2022 count
Owner
County
County Highway Agency

About this bridge

410th ST over Small Stream is a steel culvert carrying 410th ST over Small Stream in Sioux County, Iowa. It was built in 2007, so it is 18 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 159 vehicles a day, projected to reach 159 by 2044. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries410th ST
CrossesSmall Stream
Location095451501
RouteCounty Highway 0
CountySioux County
StateIowa
Coordinates43.05528, -96.14581
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2022)
Projected traffic159 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 410th ST over Small Stream built?

It was built in 2007, making it 18 years old in 2025.

What condition is 410th ST over Small Stream 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 410th ST over Small Stream carry?

About 159 vehicles per day (2022 count).

How long is 410th ST over Small Stream?

The structure is 33 ft (10.1 m) long with a longest span of 14 ft (4.3 m).

Who owns 410th ST over Small Stream?

It is owned by the County Highway Agency.