US Bridges

C Ave over Small Stream

Good

Washington County, Iowa · 077071800 · Structure no. 000000000006811

Built
1998
27 years old
Condition
Good
inspected March 2021
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
234
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

C Ave over Small Stream is a concrete continuous culvert carrying C Ave over Small Stream in Washington County, Iowa. It was built in 1998, so it is 27 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 234 vehicles a day, projected to reach 234 by 2043. The structure is 31 ft (9.4 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesC Ave
CrossesSmall Stream
Location077071800
RouteCity Street 0
StateIowa
Coordinates41.48408, -91.71036
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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2021
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
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span15 ft (4.6 m)
Deck width30 ft (9.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic234 (2022)
Projected traffic234 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was C Ave over Small Stream built?

It was built in 1998, making it 27 years old in 2025.

What condition is C Ave 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 2021.

How much traffic does C Ave over Small Stream carry?

About 234 vehicles per day (2022 count).

How long is C Ave over Small Stream?

The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.6 m) and a deck 30 ft wide.

Who owns C Ave over Small Stream?

It is owned by the City or Municipal Highway Agency.