US Bridges

I 17 over 11th Ave & Sfrr

Fair

Maricopa County, Arizona · 3.2 MI W JCT I 10 · Structure no. 00721

Built
1963
62 years old, rebuilt 2012
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
1 main span
Daily traffic
127,230
2023 count
Owner
State
State Highway Agency

About this bridge

I 17 over 11th Ave & Sfrr is a steel stringer/multi-beam or girder carrying I 17 over 11th Ave & Sfrr in Maricopa County, Arizona. It was built in 1963 and reconstructed in 2012, so it is 62 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 127,230 vehicles a day, roughly 10% of them trucks, projected to reach 127,240 by 2042. The structure is 70 ft (21.3 m) long and 121 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 17
Crosses11th Ave & Sfrr
Location3.2 MI W JCT I 10
RouteInterstate 17
CountyMaricopa County
StateArizona
Coordinates33.4298, -112.0867
Functional classUrban Principal Arterial - Interstate

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.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span66 ft (20.1 m)
Deck width121 ft (36.9 m)
Roadway width114 ft (34.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic127,230 (2023)
Projected traffic127,240 by 2042
Trucks10%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 17 over 11th Ave & Sfrr built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2012.

What condition is I 17 over 11th Ave & Sfrr 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 September 2023.

How much traffic does I 17 over 11th Ave & Sfrr carry?

About 127,230 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is I 17 over 11th Ave & Sfrr?

The structure is 70 ft (21.3 m) long with a longest span of 66 ft (20.1 m) and a deck 121 ft wide.

Who owns I 17 over 11th Ave & Sfrr?

It is owned by the State Highway Agency.