US Bridges

Wintersburg Road over I 10

Fair

Maricopa County, Arizona · 17.7 MI West of JCT SR 85 · Structure no. 01529

Built
1971
54 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
245 ft
2 main spans
Daily traffic
1,080
2021 count
Owner
State
State Highway Agency

About this bridge

Wintersburg Road over I 10 is a concrete continuous box beam or girders - single or spread carrying Wintersburg Road over I 10 in Maricopa County, Arizona. It was built in 1971, so it is 54 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 1,080 vehicles a day, roughly 5% of them trucks, projected to reach 1,090 by 2041. The structure is 245 ft (74.7 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesWintersburg Road
CrossesI 10
Location17.7 MI West of JCT SR 85
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.4816, -112.8677
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating94 US tons
Inventory rating56 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length245 ft (74.7 m)
Longest span120 ft (36.6 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,080 (2021)
Projected traffic1,090 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wintersburg Road over I 10 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Wintersburg Road over I 10 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 April 2023.

How much traffic does Wintersburg Road over I 10 carry?

About 1,080 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Wintersburg Road over I 10?

The structure is 245 ft (74.7 m) long with a longest span of 120 ft (36.6 m) and a deck 33 ft wide.

Who owns Wintersburg Road over I 10?

It is owned by the State Highway Agency.