Interstate 79 SB over Mon. Co. Rt. 77
PoorMonongalia County, West Virginia · 3.16 MI South I-68 · Structure no. 00000000031A166
- Built
- 1967
- 58 years old
- Condition
- Poor
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 145 ft
- 1 main span
- Daily traffic
- 16,350
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 79 SB over Mon. Co. Rt. 77 is a steel continuous stringer/multi-beam or girder carrying Interstate 79 SB over Mon. Co. Rt. 77 in Monongalia County, West Virginia. It was built in 1967, so it is 58 years old, older than the West Virginia average of 44.7 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 16,350 vehicles a day, roughly 16% of them trucks, projected to reach 23,380 by 2041. The structure is 145 ft (44.3 m) long and 43 ft wide.
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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Interstate 79 SB over Mon. Co. Rt. 77 built?
It was built in 1967, making it 58 years old in 2025.
What condition is Interstate 79 SB over Mon. Co. Rt. 77 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 August 2023.
How much traffic does Interstate 79 SB over Mon. Co. Rt. 77 carry?
About 16,350 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is Interstate 79 SB over Mon. Co. Rt. 77?
The structure is 145 ft (44.3 m) long with a longest span of 51 ft (15.4 m) and a deck 43 ft wide.
Who owns Interstate 79 SB over Mon. Co. Rt. 77?
It is owned by the State Highway Agency.