US Bridges

Union Hills Drive over Cave Creek

Fair

Maricopa County, Arizona · Union Hills E. of 7th Ave · Structure no. 10005

Built
1994
31 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
96 ft
3 main spans
Daily traffic
28,367
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Union Hills Drive over Cave Creek is a concrete continuous slab carrying Union Hills Drive over Cave Creek in Maricopa County, Arizona. It was built in 1994, so it is 31 years old, younger 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 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 28,367 vehicles a day, roughly 1% of them trucks, projected to reach 28,377 by 2042. The structure is 96 ft (29.3 m) long and 99 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUnion Hills Drive
CrossesCave Creek
LocationUnion Hills E. of 7th Ave
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.6547, -112.0791
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.4 US tons
Inventory rating58.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span37 ft (11.3 m)
Deck width99 ft (30.1 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,367 (2023)
Projected traffic28,377 by 2042
Trucks1%
Lanes on structure4
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 Union Hills Drive over Cave Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Union Hills Drive over Cave 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 January 2024.

How much traffic does Union Hills Drive over Cave Creek carry?

About 28,367 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Union Hills Drive over Cave Creek?

The structure is 96 ft (29.3 m) long with a longest span of 37 ft (11.3 m) and a deck 99 ft wide.

Who owns Union Hills Drive over Cave Creek?

It is owned by the City or Municipal Highway Agency.