I-15 NB over Old US-91
GoodWashington County, Utah · I-15 NB over Old US-91 · Structure no. 1C1055
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 89 ft
- 1 main span
- Daily traffic
- 27,900
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
I-15 NB over Old US-91 is a steel stringer/multi-beam or girder carrying I-15 NB over Old US-91 in Washington County, Utah. It was built in 2020, so it is 5 years old, younger than the Utah average of 40.1 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 27,900 vehicles a day, roughly 43% of them trucks, projected to reach 59,400 by 2040. The structure is 89 ft (27 m) long and 63 ft wide.
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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-15 NB over Old US-91 built?
It was built in 2020, making it 5 years old in 2025.
What condition is I-15 NB over Old US-91 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 January 2025.
How much traffic does I-15 NB over Old US-91 carry?
About 27,900 vehicles per day (2018 count), of which roughly 43% are trucks.
How long is I-15 NB over Old US-91?
The structure is 89 ft (27 m) long with a longest span of 85 ft (25.9 m) and a deck 63 ft wide.
Who owns I-15 NB over Old US-91?
It is owned by the State Highway Agency.