I 90B Loop over I 90 Eb-Wb;e.Mullan Ic
FairShoshone County, Idaho · 0.3 E. Mullan · Structure no. 000000000017390
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 137 ft
- 1 main span
- Daily traffic
- 300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90B Loop over I 90 Eb-Wb;e.Mullan Ic is a steel stringer/multi-beam or girder carrying I 90B Loop over I 90 Eb-Wb;e.Mullan Ic in Shoshone County, Idaho. It was built in 1973, so it is 52 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 300 vehicles a day, roughly 50% of them trucks, projected to reach 450 by 2042. The structure is 137 ft (41.8 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90B Loop over I 90 Eb-Wb;e.Mullan Ic built?
It was built in 1973, making it 52 years old in 2025.
What condition is I 90B Loop over I 90 Eb-Wb;e.Mullan Ic in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.
How much traffic does I 90B Loop over I 90 Eb-Wb;e.Mullan Ic carry?
About 300 vehicles per day (2023 count), of which roughly 50% are trucks.
How long is I 90B Loop over I 90 Eb-Wb;e.Mullan Ic?
The structure is 137 ft (41.8 m) long with a longest span of 110 ft (33.5 m) and a deck 40 ft wide.
Who owns I 90B Loop over I 90 Eb-Wb;e.Mullan Ic?
It is owned by the State Highway Agency.