I 90 over Sep Heeb Road
GoodGallatin County, Montana · 2.5M E Manhattan · Structure no. I00090291+06372
- Built
- 1965
- 60 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 115 ft
- 3 main spans
- Daily traffic
- 9,726
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Sep Heeb Road is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Sep Heeb Road in Gallatin County, Montana. It was built in 1965, so it is 60 years old, older than the Montana average of 47 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 9,726 vehicles a day, roughly 12% of them trucks, projected to reach 10,990 by 2043. The structure is 115 ft (35.1 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 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 I 90 over Sep Heeb Road built?
It was built in 1965, making it 60 years old in 2025.
What condition is I 90 over Sep Heeb Road 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 April 2024.
How much traffic does I 90 over Sep Heeb Road carry?
About 9,726 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is I 90 over Sep Heeb Road?
The structure is 115 ft (35.1 m) long with a longest span of 41 ft (12.6 m) and a deck 39 ft wide.
Who owns I 90 over Sep Heeb Road?
It is owned by the State Highway Agency.