US Bridges

Entrance over Side Ditch Bridge

PoorClosed to traffic

Dubuque County, Iowa · 087021601 · Structure no. 000000000364090

Built
1912
113 years old
Condition
Poor
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

Entrance over Side Ditch Bridge is a steel stringer/multi-beam or girder carrying Entrance over Side Ditch Bridge in Dubuque County, Iowa. It was built in 1912, so it is 113 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 10 vehicles a day, projected to reach 10 by 2043. The structure is 39 ft (11.9 m) long and 15 ft wide.

CarriesEntrance
CrossesSide Ditch Bridge
Location087021601
RouteCounty Highway 0
StateIowa
Coordinates42.35399, -91.08722
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span37 ft (11.3 m)
Deck width15 ft (4.7 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Entrance over Side Ditch Bridge built?

It was built in 1912, making it 113 years old in 2025.

What condition is Entrance over Side Ditch Bridge in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.

How much traffic does Entrance over Side Ditch Bridge carry?

About 10 vehicles per day (2022 count).

How long is Entrance over Side Ditch Bridge?

The structure is 39 ft (11.9 m) long with a longest span of 37 ft (11.3 m) and a deck 15 ft wide.

Who owns Entrance over Side Ditch Bridge?

It is owned by the County Highway Agency.