US Bridges

Old Black Cyn HWY over Agua Fria River

Fair

Yavapai County, Arizona · 1.5 MI W JCT I-17 · Structure no. 09387

Built
1950
75 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
306 ft
4 main spans
Daily traffic
2,083
2022 count
Owner
County
County Highway Agency

About this bridge

Old Black Cyn HWY over Agua Fria River is a steel continuous stringer/multi-beam or girder carrying Old Black Cyn HWY over Agua Fria River in Yavapai County, Arizona. It was built in 1950, so it is 75 years old, older than the Arizona average of 47.8 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.

It carries about 2,083 vehicles a day, roughly 5% of them trucks, projected to reach 2,093 by 2042. The structure is 306 ft (93.3 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesOld Black Cyn HWY
CrossesAgua Fria River
Location1.5 MI W JCT I-17
RouteCounty Highway 0
CountyYavapai County
StateArizona
Coordinates34.06904, -112.15184
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length306 ft (93.3 m)
Longest span75 ft (22.9 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck30 ft (9.1 m)

Traffic and service

Average daily traffic2,083 (2022)
Projected traffic2,093 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Black Cyn HWY over Agua Fria River built?

It was built in 1950, making it 75 years old in 2025.

What condition is Old Black Cyn HWY over Agua Fria River 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 July 2023.

How much traffic does Old Black Cyn HWY over Agua Fria River carry?

About 2,083 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Old Black Cyn HWY over Agua Fria River?

The structure is 306 ft (93.3 m) long with a longest span of 75 ft (22.9 m) and a deck 36 ft wide.

Who owns Old Black Cyn HWY over Agua Fria River?

It is owned by the County Highway Agency.