US Bridges

SR 87 over Rock Creek Wash

Good

Maricopa County, Arizona · 26.8 MI S JCT SR 188 · Structure no. 04658

Built
1958
67 years old, rebuilt 1996
Condition
Good
inspected June 2023
Type
Culvert
Concrete Continuous
Length
51 ft
4 main spans
Daily traffic
15,062
2021 count
Owner
State
State Highway Agency

About this bridge

SR 87 over Rock Creek Wash is a concrete continuous culvert carrying SR 87 over Rock Creek Wash in Maricopa County, Arizona. It was built in 1958 and reconstructed in 1996, so it is 67 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 15,062 vehicles a day, roughly 10% of them trucks, projected to reach 15,072 by 2041. The structure is 51 ft (15.5 m) long. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesSR 87
CrossesRock Creek Wash
Location26.8 MI S JCT SR 188
RouteState Highway 87
CountyMaricopa County
StateArizona
Coordinates33.73108, -111.50918
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length51 ft (15.5 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 traffic15,062 (2021)
Projected traffic15,072 by 2041
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$2,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 87 over Rock Creek Wash built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1996.

What condition is SR 87 over Rock Creek Wash 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 June 2023.

How much traffic does SR 87 over Rock Creek Wash carry?

About 15,062 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is SR 87 over Rock Creek Wash?

The structure is 51 ft (15.5 m) long with a longest span of 12 ft (3.7 m).

Who owns SR 87 over Rock Creek Wash?

It is owned by the State Highway Agency.