Entrance over Side Ditch

Fair

Dubuque County, Iowa · 089010403 · Structure no. 000000000364061

Built: 2017; 8 years old
Condition: Fair; inspected October 2023
Type: Tee Beam; Concrete
Length: 32 ft; 1 main span
Daily traffic: 10; 2022 count
Owner: County; County Highway Agency

About this bridge

Entrance over Side Ditch is a concrete tee beam carrying Entrance over Side Ditch in Dubuque County, Iowa. It was built in 2017, so it is 8 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 10 vehicles a day, projected to reach 10 by 2043. The structure is 32 ft (9.8 m) long and 23 ft wide.

Location

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CarriesEntrance

CrossesSide Ditch

Location089010403

RouteCounty Highway 0

CountyDubuque County

StateIowa

Coordinates42.55786, -90.95771

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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionOctober 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating30 US tons

Inventory rating23.3 US tons

Structure

Structure typeTee Beam

MaterialConcrete

DeckConcrete, precast panels

Main spans1

Design loadH 15

Structure length32 ft (9.8 m)

Longest span30 ft (9.1 m)

Deck width23 ft (6.9 m)

Roadway width21 ft (6.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)

Projected traffic10 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 proposedNone recorded

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was Entrance over Side Ditch built?

It was built in 2017, making it 8 years old in 2025.

What condition is Entrance over Side 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 October 2023.

How much traffic does Entrance over Side Ditch carry?

About 10 vehicles per day (2022 count).

How long is Entrance over Side Ditch?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 23 ft wide.

Who owns Entrance over Side Ditch?

It is owned by the County Highway Agency.