Local over Johns Creek

FairPosted for load

Dubuque County, Iowa · 088023504 · Structure no. 000000000146951

Built: 1979; 46 years old
Condition: Fair; inspected May 2023
Type: Tee Beam; Prestressed Concrete
Length: 38 ft; 1 main span
Daily traffic: 20; 2021 count
Owner: County; County Highway Agency

About this bridge

Local over Johns Creek is a prestressed concrete tee beam carrying Local over Johns Creek in Dubuque County, Iowa. It was built in 1979, so it is 46 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. Its operating status is: posted for other load-capacity restriction.

It carries about 20 vehicles a day, projected to reach 20 by 2043. The structure is 38 ft (11.6 m) long and 20 ft wide.

Location

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CarriesLocal

CrossesJohns Creek

Location088023504

RouteCounty Highway 0

CountyDubuque County

StateIowa

Coordinates42.38452, -91.03825

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	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionMay 2023

Inspection intervalevery 24 months

Operating statusPosted for other load-capacity restriction

ScourUnknown foundation; not evaluated for scour

Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is

Waterway adequacy6: Equal to present minimum criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating33.2 US tons

Inventory rating25.7 US tons

Structure

Structure typeTee Beam

MaterialPrestressed Concrete

DeckConcrete, precast panels

Main spans1

Design loadHS 20

Structure length38 ft (11.6 m)

Longest span35 ft (10.7 m)

Deck width20 ft (6.1 m)

Roadway width19 ft (5.9 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2021)

Projected traffic20 by 2043

Trucks0%

Lanes on structure2

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—

NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Johns Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Local over Johns Creek 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 May 2023.

How much traffic does Local over Johns Creek carry?

About 20 vehicles per day (2021 count).

How long is Local over Johns Creek?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.7 m) and a deck 20 ft wide.

Who owns Local over Johns Creek?

It is owned by the County Highway Agency.