US Bridges

Mission Road over Enchanted Hills Wash

Good

Pima County, Arizona · 0.5 MI S JCT 36th ST · Structure no. 09031

Built
1956
69 years old, rebuilt 1989
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
79 ft
5 main spans
Daily traffic
21,560
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mission Road over Enchanted Hills Wash is a concrete continuous culvert carrying Mission Road over Enchanted Hills Wash in Pima County, Arizona. It was built in 1956 and reconstructed in 1989, so it is 69 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 21,560 vehicles a day, roughly 5% of them trucks, projected to reach 21,570 by 2042. The structure is 79 ft (24.1 m) long and 89 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMission Road
CrossesEnchanted Hills Wash
Location0.5 MI S JCT 36th ST
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.1863, -111.0022
Functional classUrban Minor Arterial

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 inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span10 ft (3 m)
Deck width89 ft (27.1 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,560 (2023)
Projected traffic21,570 by 2042
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Mission Road over Enchanted Hills Wash built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1989.

What condition is Mission Road over Enchanted Hills 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 May 2023.

How much traffic does Mission Road over Enchanted Hills Wash carry?

About 21,560 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Mission Road over Enchanted Hills Wash?

The structure is 79 ft (24.1 m) long with a longest span of 10 ft (3 m) and a deck 89 ft wide.

Who owns Mission Road over Enchanted Hills Wash?

It is owned by the City or Municipal Highway Agency.