Custis Mempkwy I66 over Route 124 and Spout Run
FairArlington County, Virginia · 00.30FR29S/ 00.57TO29N · Structure no. 000000000000191
- Built
- 1981
- 44 years old
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 539 ft
- 4 main spans
- Daily traffic
- 82,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Custis Mempkwy I66 over Route 124 and Spout Run is a steel stringer/multi-beam or girder carrying Custis Mempkwy I66 over Route 124 and Spout Run in Arlington County, Virginia. It was built in 1981, so it is 44 years old, younger than the Virginia average of 50.7 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 82,000 vehicles a day, roughly 1% of them trucks, projected to reach 91,430 by 2045. The structure is 539 ft (164.3 m) long and 105 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Custis Mempkwy I66 over Route 124 and Spout Run built?
It was built in 1981, making it 44 years old in 2025.
What condition is Custis Mempkwy I66 over Route 124 and Spout Run 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 October 2023.
How much traffic does Custis Mempkwy I66 over Route 124 and Spout Run carry?
About 82,000 vehicles per day (2022 count), of which roughly 1% are trucks.
How long is Custis Mempkwy I66 over Route 124 and Spout Run?
The structure is 539 ft (164.3 m) long with a longest span of 155 ft (47.2 m) and a deck 105 ft wide.
Who owns Custis Mempkwy I66 over Route 124 and Spout Run?
It is owned by the State Highway Agency.