US Bridges

Dobson Road over US 60

Fair

Maricopa County, Arizona · 5.43 MI E JCT I 10 · Structure no. 01795

Built
1977
48 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
227 ft
2 main spans
Daily traffic
35,360
2022 count
Owner
State
State Highway Agency

About this bridge

Dobson Road over US 60 is a prestressed concrete continuous box beam or girders - single or spread carrying Dobson Road over US 60 in Maricopa County, Arizona. It was built in 1977, so it is 48 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.

It carries about 35,360 vehicles a day, roughly 4% of them trucks, projected to reach 35,370 by 2042. The structure is 227 ft (69.2 m) long and 141 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesDobson Road
CrossesUS 60
Location5.43 MI E JCT I 10
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.3855, -111.8747
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating60 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length227 ft (69.2 m)
Longest span112 ft (34.1 m)
Deck width141 ft (42.9 m)
Roadway width114 ft (34.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,360 (2022)
Projected traffic35,370 by 2042
Trucks4%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$4,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Dobson Road over US 60 built?

It was built in 1977, making it 48 years old in 2025.

What condition is Dobson Road over US 60 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 November 2023.

How much traffic does Dobson Road over US 60 carry?

About 35,360 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Dobson Road over US 60?

The structure is 227 ft (69.2 m) long with a longest span of 112 ft (34.1 m) and a deck 141 ft wide.

Who owns Dobson Road over US 60?

It is owned by the State Highway Agency.