12th to 29th Ramp over I-10
GoodPima County, Arizona · JCT I-10 & I-19 · Structure no. 02603
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected December 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 598 ft
- 4 main spans
- Daily traffic
- 7,067
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
12th to 29th Ramp over I-10 is a prestressed concrete continuous box beam or girders - single or spread carrying 12th to 29th Ramp over I-10 in Pima County, Arizona. It was built in 2003, so it is 22 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 7,067 vehicles a day, roughly 2% of them trucks, projected to reach 7,077 by 2041. The structure is 598 ft (182.3 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 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 12th to 29th Ramp over I-10 built?
It was built in 2003, making it 22 years old in 2025.
What condition is 12th to 29th Ramp over I-10 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 December 2024.
How much traffic does 12th to 29th Ramp over I-10 carry?
About 7,067 vehicles per day (2021 count), of which roughly 2% are trucks.
How long is 12th to 29th Ramp over I-10?
The structure is 598 ft (182.3 m) long with a longest span of 188 ft (57.3 m) and a deck 29 ft wide.
Who owns 12th to 29th Ramp over I-10?
It is owned by the State Highway Agency.