US Bridges

HWY 410 over Drainage Ditch

Fair

Clayton County, Iowa · 091062710 · Structure no. 000000000020700

Built
1928
97 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
422
2022 count
Owner
County
County Highway Agency

About this bridge

HWY 410 over Drainage Ditch is a concrete continuous culvert carrying HWY 410 over Drainage Ditch in Clayton County, Iowa. It was built in 1928, so it is 97 years old, older 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 5 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 422 vehicles a day, roughly 6% of them trucks, projected to reach 422 by 2044. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesHWY 410
CrossesDrainage Ditch
Location091062710
RouteCounty Highway 0
CountyClayton County
StateIowa
Coordinates42.65899, -91.53859
Functional classRural Major 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic422 (2022)
Projected traffic422 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 HWY 410 over Drainage Ditch built?

It was built in 1928, making it 97 years old in 2025.

What condition is HWY 410 over Drainage Ditch 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 November 2024.

How much traffic does HWY 410 over Drainage Ditch carry?

About 422 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is HWY 410 over Drainage Ditch?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns HWY 410 over Drainage Ditch?

It is owned by the County Highway Agency.