US Bridges

Roller Coaster RD over Medium Wash

Good

Pima County, Arizona · 200 Ft S Hudson DR · Structure no. 08468

Built
1979
46 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete Continuous
Length
45 ft
5 main spans
Daily traffic
610
2023 count
Owner
County
County Highway Agency

About this bridge

Roller Coaster RD over Medium Wash is a concrete continuous culvert carrying Roller Coaster RD over Medium Wash in Pima County, Arizona. It was built in 1979, so it is 46 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 610 vehicles a day, roughly 2% of them trucks, projected to reach 620 by 2042. The structure is 45 ft (13.7 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoller Coaster RD
CrossesMedium Wash
Location200 Ft S Hudson DR
RouteCounty Highway 0
CountyPima County
StateArizona
Coordinates32.30276, -111.00368
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span8 ft (2.4 m)
Deck width50 ft (15.1 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic610 (2023)
Projected traffic620 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Roller Coaster RD over Medium Wash built?

It was built in 1979, making it 46 years old in 2025.

What condition is Roller Coaster RD over Medium 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 January 2024.

How much traffic does Roller Coaster RD over Medium Wash carry?

About 610 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Roller Coaster RD over Medium Wash?

The structure is 45 ft (13.7 m) long with a longest span of 8 ft (2.4 m) and a deck 50 ft wide.

Who owns Roller Coaster RD over Medium Wash?

It is owned by the County Highway Agency.