I 15 Nbl over Main Street Gs
PoorBannock County, Idaho · In Inkom;main St. · Structure no. 000000000011175
- Built
- 1962
- 63 years old
- Condition
- Poor
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Concrete
- Length
- 124 ft
- 3 main spans
- Daily traffic
- 7,750
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 Nbl over Main Street Gs is a concrete stringer/multi-beam or girder carrying I 15 Nbl over Main Street Gs in Bannock County, Idaho. It was built in 1962, so it is 63 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 7,750 vehicles a day, roughly 24% of them trucks, projected to reach 11,625 by 2042. The structure is 124 ft (37.8 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 15 Nbl over Main Street Gs built?
It was built in 1962, making it 63 years old in 2025.
What condition is I 15 Nbl over Main Street Gs in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.
How much traffic does I 15 Nbl over Main Street Gs carry?
About 7,750 vehicles per day (2023 count), of which roughly 24% are trucks.
How long is I 15 Nbl over Main Street Gs?
The structure is 124 ft (37.8 m) long with a longest span of 41 ft (12.5 m) and a deck 40 ft wide.
Who owns I 15 Nbl over Main Street Gs?
It is owned by the State Highway Agency.