US Bridges

Union Hills Drive over East Fork of Cave Creek

Fair

Maricopa County, Arizona · At 26th ST · Structure no. 07928

Built
1991
34 years old
Condition
Fair
inspected October 2021
Type
Culvert
Concrete Continuous
Length
68 ft
6 main spans
Daily traffic
26,000
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Union Hills Drive over East Fork of Cave Creek is a concrete continuous culvert carrying Union Hills Drive over East Fork of Cave Creek in Maricopa County, Arizona. It was built in 1991, so it is 34 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 26,000 vehicles a day, roughly 1% of them trucks, projected to reach 30,000 by 2030. The structure is 68 ft (20.7 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
CrossesEast Fork of Cave Creek
LocationAt 26th ST
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.655, -112.0265
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2021
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.1 US tons
Inventory rating46.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span10 ft (3 m)
Deck width99 ft (30.2 m)
Roadway width70 ft (21.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,000 (2005)
Projected traffic30,000 by 2030
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 East Fork of Cave Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Union Hills Drive over East Fork of 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 October 2021.

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

About 26,000 vehicles per day (2005 count), of which roughly 1% are trucks.

How long is Union Hills Drive over East Fork of Cave Creek?

The structure is 68 ft (20.7 m) long with a longest span of 10 ft (3 m) and a deck 99 ft wide.

Who owns Union Hills Drive over East Fork of Cave Creek?

It is owned by the City or Municipal Highway Agency.