US Bridges

Mitchell Ave over Dry Run Creek

Fair

Black Hawk County, Iowa · City Bridge No. 5 · Structure no. 000000000011820

Built
1980
45 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
59 ft
3 main spans
Daily traffic
3,127
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mitchell Ave over Dry Run Creek is a concrete continuous slab carrying Mitchell Ave over Dry Run Creek in Black Hawk County, Iowa. It was built in 1980, so it is 45 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 3,127 vehicles a day, projected to reach 3,127 by 2043. The structure is 59 ft (18 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMitchell Ave
CrossesDry Run Creek
LocationCity Bridge No. 5
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.47665, -92.34396
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.5 US tons
Inventory rating48.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length59 ft (18 m)
Longest span22 ft (6.7 m)
Deck width47 ft (14.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,127 (2022)
Projected traffic3,127 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mitchell Ave over Dry Run Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Mitchell Ave over Dry Run 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 June 2023.

How much traffic does Mitchell Ave over Dry Run Creek carry?

About 3,127 vehicles per day (2022 count).

How long is Mitchell Ave over Dry Run Creek?

The structure is 59 ft (18 m) long with a longest span of 22 ft (6.7 m) and a deck 47 ft wide.

Who owns Mitchell Ave over Dry Run Creek?

It is owned by the City or Municipal Highway Agency.