Pioneer TI over I 17
Maricopa County, Arizona · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Pioneer TI over I 17 in Maricopa County, Arizona, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1968, making it 57 years old at the 2025 inventory.
- It carries about 1,237 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 889 of the 2,854 inventoried bridges in Maricopa County rated fair (31.1%); 4 (0.1%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (33.8198, -112.1418)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 224 ft |
| Location | 1.5 mi North Jct SR 74 |
| NBI structure number | 01289 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.
Busiest bridges in Maricopa County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 101L over Cave Creek Road | 2001 | 282,818 | Good |
| US 60 over Mesa Drainage Channel | 1977 | 246,297 | Good |
| Sl 202 over Grand Canal | 1990 | 243,128 | Good |
| Sl 202 over 40th Street | 1989 | 243,128 | Fair |
| US 60 over SPRR & S Center St | 1981 | 242,887 | Good |
| SL 202 (Red Mtn) over Indian Bend Wash | 1994 | 236,447 | Good |
All bridges nearby: Maricopa County, AZ bridge conditions · every bridge in Maricopa County · Arizona bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.