US Bridges

Gilbert Road NB over Santan Freeway

Good

Maricopa County, Arizona · Gilbert RD / Santan · Structure no. 02670

Built
2004
21 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
262 ft
2 main spans
Daily traffic
17,300
2019 count
Owner
State
State Highway Agency

About this bridge

Gilbert Road NB over Santan Freeway is a prestressed concrete continuous box beam or girders - single or spread carrying Gilbert Road NB over Santan Freeway in Maricopa 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 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 17,300 vehicles a day, roughly 4% of them trucks, projected to reach 17,310 by 2039. The structure is 262 ft (79.9 m) long and 133 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGilbert Road NB
CrossesSantan Freeway
LocationGilbert RD / Santan
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.2826, -111.7895
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length262 ft (79.9 m)
Longest span128 ft (39 m)
Deck width133 ft (40.5 m)
Roadway width116 ft (35.4 m)
Vertical clearance over deck25 ft (7.6 m)

Traffic and service

Average daily traffic17,300 (2019)
Projected traffic17,310 by 2039
Trucks4%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Gilbert Road NB over Santan Freeway built?

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

What condition is Gilbert Road NB over Santan Freeway 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 2024.

How much traffic does Gilbert Road NB over Santan Freeway carry?

About 17,300 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Gilbert Road NB over Santan Freeway?

The structure is 262 ft (79.9 m) long with a longest span of 128 ft (39 m) and a deck 133 ft wide.

Who owns Gilbert Road NB over Santan Freeway?

It is owned by the State Highway Agency.