US Bridges

Wilmot Road over Alamo Wash

Good

Pima County, Arizona · 0.2 MI S JCT Broadway Bl · Structure no. 09032

Built
1962
63 years old, rebuilt 1965
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
33,897
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Wilmot Road over Alamo Wash is a concrete continuous culvert carrying Wilmot Road over Alamo Wash in Pima County, Arizona. It was built in 1962 and reconstructed in 1965, so it is 63 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 33,897 vehicles a day, roughly 10% of them trucks, projected to reach 33,907 by 2042. The structure is 32 ft (9.8 m) long and 141 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesWilmot Road
CrossesAlamo Wash
Location0.2 MI S JCT Broadway Bl
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.2179, -110.858
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
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 adequacy7: Better than present minimum 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 spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width141 ft (43 m)
Roadway width117 ft (35.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,897 (2022)
Projected traffic33,907 by 2042
Trucks10%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Wilmot Road over Alamo Wash built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1965.

What condition is Wilmot Road over Alamo 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 March 2023.

How much traffic does Wilmot Road over Alamo Wash carry?

About 33,897 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Wilmot Road over Alamo Wash?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 141 ft wide.

Who owns Wilmot Road over Alamo Wash?

It is owned by the City or Municipal Highway Agency.