US Bridges

20th Street over East Fork of Cave Creek

Good

Maricopa County, Arizona · 0.01 MI S of Greenway · Structure no. 11186

Built
2000
25 years old
Condition
Good
inspected March 2021
Type
Culvert
Concrete Continuous
Length
53 ft
4 main spans
Daily traffic
1,956
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

20th Street over East Fork of Cave Creek is a concrete continuous culvert carrying 20th Street over East Fork of Cave Creek in Maricopa County, Arizona. It was built in 2000, so it is 25 years old, younger 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 1,956 vehicles a day, roughly 1% of them trucks, projected to reach 1,966 by 2036. The structure is 53 ft (16.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Carries20th Street
CrossesEast Fork of Cave Creek
Location0.01 MI S of Greenway
RouteCity Street 0
StateArizona
Coordinates33.6325, -112.0395
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.9 US tons
Inventory rating64.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,956 (2016)
Projected traffic1,966 by 2036
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a toll 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 20th Street over East Fork of Cave Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is 20th Street over East Fork of Cave 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 March 2021.

How much traffic does 20th Street over East Fork of Cave Creek carry?

About 1,956 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is 20th Street over East Fork of Cave Creek?

The structure is 53 ft (16.2 m) long with a longest span of 12 ft (3.7 m).

Who owns 20th Street over East Fork of Cave Creek?

It is owned by the City or Municipal Highway Agency.