US Bridges

Melpomene Way over Medium Wash

Good

Pima County, Arizona · N of Pima Meadows · Structure no. 11606

Built
2004
21 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
1,913
2022 count
Owner
County
County Highway Agency

About this bridge

Melpomene Way over Medium Wash is a concrete continuous culvert carrying Melpomene Way over Medium Wash in Pima County, Arizona. It was built in 2004, so it is 21 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,913 vehicles a day, roughly 5% of them trucks, projected to reach 1,923 by 2042. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMelpomene Way
CrossesMedium Wash
LocationN of Pima Meadows
RouteCounty Highway 0
StateArizona
Coordinates31.94806, -110.75739
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.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating49.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length38 ft (11.6 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 traffic1,913 (2022)
Projected traffic1,923 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 Melpomene Way over Medium Wash built?

It was built in 2004, making it 21 years old in 2025.

What condition is Melpomene Way 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 October 2023.

How much traffic does Melpomene Way over Medium Wash carry?

About 1,913 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Melpomene Way over Medium Wash?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Melpomene Way over Medium Wash?

It is owned by the County Highway Agency.