US Bridges

A6W River RD over Drainage

Fair

Winneshiek County, Iowa · 098081311 · Structure no. 000000000347594

Built
1985
40 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
1,856
2022 count
Owner
County
County Highway Agency

About this bridge

A6W River RD over Drainage is a concrete continuous culvert carrying A6W River RD over Drainage in Winneshiek County, Iowa. It was built in 1985, so it is 40 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,856 vehicles a day, projected to reach 1,856 by 2043. The structure is 28 ft (8.5 m) long.

Location

Open in Google Maps
CarriesA6W River RD
CrossesDrainage
Location098081311
RouteCounty Highway 0
CountyWinneshiek County
StateIowa
Coordinates43.30218, -91.73912
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.1 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 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 traffic1,856 (2022)
Projected traffic1,856 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was A6W River RD over Drainage built?

It was built in 1985, making it 40 years old in 2025.

What condition is A6W River RD over Drainage in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does A6W River RD over Drainage carry?

About 1,856 vehicles per day (2022 count).

How long is A6W River RD over Drainage?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m).

Who owns A6W River RD over Drainage?

It is owned by the County Highway Agency.