US Bridges

Grant Road over Alamo Wash

FairPosted for load

Pima County, Arizona · 0.1 MI E JCT Craycroft RD · Structure no. 09021

Built
1964
61 years old, rebuilt 1971
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
68 ft
3 main spans
Daily traffic
44,594
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Grant Road over Alamo Wash is a concrete continuous slab carrying Grant Road over Alamo Wash in Pima County, Arizona. It was built in 1964 and reconstructed in 1971, so it is 61 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 44,594 vehicles a day, roughly 5% of them trucks, projected to reach 44,604 by 2042. The structure is 68 ft (20.7 m) long and 109 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGrant Road
CrossesAlamo Wash
Location0.1 MI E JCT Craycroft RD
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.2507, -110.8728
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span25 ft (7.6 m)
Deck width109 ft (33.2 m)
Roadway width98 ft (29.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,594 (2022)
Projected traffic44,604 by 2042
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Grant Road over Alamo Wash built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1971.

What condition is Grant Road over Alamo Wash in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Grant Road over Alamo Wash carry?

About 44,594 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Grant Road over Alamo Wash?

The structure is 68 ft (20.7 m) long with a longest span of 25 ft (7.6 m) and a deck 109 ft wide.

Who owns Grant Road over Alamo Wash?

It is owned by the City or Municipal Highway Agency.