US Bridges

Fletcher Ave over Black Hawk Creek

Fair

Black Hawk County, Iowa · City Bridge No. 18 · Structure no. 000000000012060

Built
1949
76 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
128 ft
4 main spans
Daily traffic
4,635
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fletcher Ave over Black Hawk Creek is a concrete continuous slab carrying Fletcher Ave over Black Hawk Creek in Black Hawk County, Iowa. It was built in 1949, so it is 76 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. Its operating status is: open, posting recommended but not legally implemented.

It carries about 4,635 vehicles a day, roughly 3% of them trucks, projected to reach 4,635 by 2043. The structure is 128 ft (39 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFletcher Ave
CrossesBlack Hawk Creek
LocationCity Bridge No. 18
RouteCity Street 0
StateIowa
Coordinates42.49077, -92.36717
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.8 US tons
Inventory rating25.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length128 ft (39 m)
Longest span35 ft (10.7 m)
Deck width34 ft (10.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,635 (2022)
Projected traffic4,635 by 2043
Trucks3%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fletcher Ave over Black Hawk Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is Fletcher Ave over Black Hawk 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 Fletcher Ave over Black Hawk Creek carry?

About 4,635 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Fletcher Ave over Black Hawk Creek?

The structure is 128 ft (39 m) long with a longest span of 35 ft (10.7 m) and a deck 34 ft wide.

Who owns Fletcher Ave over Black Hawk Creek?

It is owned by the City or Municipal Highway Agency.