US Bridges

Pioneer Ti over I 17

Fair

Maricopa County, Arizona · 1.5 MI North JCT SR 74 · Structure no. 01289

Built
1968
57 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
224 ft
2 main spans
Daily traffic
1,237
2023 count
Owner
State
State Highway Agency

About this bridge

Pioneer Ti over I 17 is a steel continuous stringer/multi-beam or girder carrying Pioneer Ti over I 17 in Maricopa County, Arizona. It was built in 1968, so it is 57 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 1,237 vehicles a day, roughly 9% of them trucks, projected to reach 1,247 by 2042. The structure is 224 ft (68.3 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPioneer Ti
CrossesI 17
Location1.5 MI North JCT SR 74
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.8198, -112.1418
Functional classUrban Local

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 inspectionOctober 2024
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 rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span110 ft (33.5 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,237 (2023)
Projected traffic1,247 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pioneer Ti over I 17 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Pioneer Ti over I 17 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 October 2024.

How much traffic does Pioneer Ti over I 17 carry?

About 1,237 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Pioneer Ti over I 17?

The structure is 224 ft (68.3 m) long with a longest span of 110 ft (33.5 m) and a deck 36 ft wide.

Who owns Pioneer Ti over I 17?

It is owned by the State Highway Agency.