US Bridges

380th ST over Small Stream

Good

Sac County, Iowa · 086382703 · Structure no. 000000000299702

Built
2012
13 years old
Condition
Good
inspected August 2024
Type
Culvert
Steel
Length
27 ft
2 main spans
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

380th ST over Small Stream is a steel culvert carrying 380th ST over Small Stream in Sac County, Iowa. It was built in 2012, so it is 13 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 11 vehicles a day, projected to reach 11 by 2044. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries380th ST
CrossesSmall Stream
Location086382703
RouteCounty Highway 0
CountySac County
StateIowa
Coordinates42.23975, -95.24686
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 inspectionAugust 2024
Inspection intervalevery 48 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 alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 380th ST over Small Stream built?

It was built in 2012, making it 13 years old in 2025.

What condition is 380th 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 August 2024.

How much traffic does 380th ST over Small Stream carry?

About 11 vehicles per day (2022 count).

How long is 380th ST over Small Stream?

The structure is 27 ft (8.2 m) long with a longest span of 11 ft (3.4 m).

Who owns 380th ST over Small Stream?

It is owned by the County Highway Agency.