US Bridges

Co. 74-OLD Blk Cyn over Hackberry Creek

Good

Yavapai County, Arizona · 3.2 MI S JCT SR 69 · Structure no. 08233

Built
1936
89 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
48 ft
2 main spans
Daily traffic
248
2022 count
Owner
County
County Highway Agency

About this bridge

Co. 74-OLD Blk Cyn over Hackberry Creek is a steel stringer/multi-beam or girder carrying Co. 74-OLD Blk Cyn over Hackberry Creek in Yavapai County, Arizona. It was built in 1936, so it is 89 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 248 vehicles a day, roughly 1% of them trucks, projected to reach 258 by 2042. The structure is 48 ft (14.6 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCo. 74-OLD Blk Cyn
CrossesHackberry Creek
Location3.2 MI S JCT SR 69
RouteCounty Highway 0
CountyYavapai County
StateArizona
Coordinates34.3559, -112.1903
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span22 ft (6.7 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic248 (2022)
Projected traffic258 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Co. 74-OLD Blk Cyn over Hackberry Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is Co. 74-OLD Blk Cyn over Hackberry Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Co. 74-OLD Blk Cyn over Hackberry Creek carry?

About 248 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Co. 74-OLD Blk Cyn over Hackberry Creek?

The structure is 48 ft (14.6 m) long with a longest span of 22 ft (6.7 m) and a deck 21 ft wide.

Who owns Co. 74-OLD Blk Cyn over Hackberry Creek?

It is owned by the County Highway Agency.