US Bridges

Jacoby DR W over Drainage Ditch

Fair

Dubuque County, Iowa · 0.2 MI W. of S. Center Av · Structure no. 000000000023800

Built
1960
65 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
379
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Jacoby DR W over Drainage Ditch is a concrete continuous culvert carrying Jacoby DR W over Drainage Ditch in Dubuque County, Iowa. It was built in 1960, so it is 65 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 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 379 vehicles a day, projected to reach 379 by 2043. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesJacoby DR W
CrossesDrainage Ditch
Location0.2 MI W. of S. Center Av
RouteCity Street 0
CountyDubuque County
StateIowa
Coordinates42.44051, -90.93658
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.2 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 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 traffic379 (2023)
Projected traffic379 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$52,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jacoby DR W over Drainage Ditch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Jacoby DR W 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 2023.

How much traffic does Jacoby DR W over Drainage Ditch carry?

About 379 vehicles per day (2023 count).

How long is Jacoby DR W over Drainage Ditch?

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

Who owns Jacoby DR W over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.