US Bridges

110th ST over Small Stream

Good

Washington County, Iowa · 077081201 · Structure no. 000000000337741

Built
2006
19 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete Continuous
Length
34 ft
2 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

110th ST over Small Stream is a concrete continuous culvert carrying 110th ST over Small Stream in Washington County, Iowa. It was built in 2006, so it is 19 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, projected to reach 100 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Carries110th ST
CrossesSmall Stream
Location077081201
RouteCounty Highway 0
StateIowa
Coordinates41.49686, -91.73349
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic100 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 110th ST over Small Stream built?

It was built in 2006, making it 19 years old in 2025.

What condition is 110th 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 February 2023.

How much traffic does 110th ST over Small Stream carry?

About 100 vehicles per day (2022 count).

How long is 110th ST over Small Stream?

The structure is 34 ft (10.4 m) long with a longest span of 17 ft (5.2 m).

Who owns 110th ST over Small Stream?

It is owned by the County Highway Agency.