I-78 WB (lr 1045) over SO.MT.DRIVE(T-422)
GoodNorthampton County, Pennsylvania · I-78 over So.Mt.Drive · Structure no. 000000000028529
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 121 ft
- 3 main spans
- Daily traffic
- 30,149
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 WB (lr 1045) over SO.MT.DRIVE(T-422) is a prestressed concrete box beam or girders - multiple carrying I-78 WB (lr 1045) over SO.MT.DRIVE(T-422) in Northampton County, Pennsylvania. It was built in 1988, so it is 37 years old, younger than the Pennsylvania average of 54.8 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 30,149 vehicles a day, roughly 17% of them trucks, projected to reach 39,527 by 2032. The structure is 121 ft (36.9 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 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-78 WB (lr 1045) over SO.MT.DRIVE(T-422) built?
It was built in 1988, making it 37 years old in 2025.
What condition is I-78 WB (lr 1045) over SO.MT.DRIVE(T-422) 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 2024.
How much traffic does I-78 WB (lr 1045) over SO.MT.DRIVE(T-422) carry?
About 30,149 vehicles per day (2024 count), of which roughly 17% are trucks.
How long is I-78 WB (lr 1045) over SO.MT.DRIVE(T-422)?
The structure is 121 ft (36.9 m) long with a longest span of 58 ft (17.7 m) and a deck 48 ft wide.
Who owns I-78 WB (lr 1045) over SO.MT.DRIVE(T-422)?
It is owned by the State Highway Agency.