SR 74 over I-17
GoodMaricopa County, Arizona · I-17/SR 74 Interchange · Structure no. 02845
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 292 ft
- 2 main spans
- Daily traffic
- 32,554
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 74 over I-17 is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 74 over I-17 in Maricopa County, Arizona. It was built in 2008, so it is 17 years old, younger than the Arizona average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 32,554 vehicles a day, roughly 7% of them trucks, projected to reach 32,564 by 2042. The structure is 292 ft (89 m) long and 130 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 74 over I-17 built?
It was built in 2008, making it 17 years old in 2025.
What condition is SR 74 over I-17 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.
How much traffic does SR 74 over I-17 carry?
About 32,554 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is SR 74 over I-17?
The structure is 292 ft (89 m) long with a longest span of 143 ft (43.6 m) and a deck 130 ft wide.
Who owns SR 74 over I-17?
It is owned by the State Highway Agency.