Brighton Dam Road over Brighton Dam & Triadelph
FairMontgomery County, Maryland · 1 Mile East of Md 650 · Structure no. 200000M-0229010
- Built
- 1944
- 81 years old, rebuilt 2001
- Condition
- Fair
- inspected September 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 602 ft
- 15 main spans
- Daily traffic
- 7,106
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Brighton Dam Road over Brighton Dam & Triadelph is a prestressed concrete slab carrying Brighton Dam Road over Brighton Dam & Triadelph in Montgomery County, Maryland. It was built in 1944 and reconstructed in 2001, so it is 81 years old, older than the Maryland average of 52.6 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 7,106 vehicles a day, roughly 5% of them trucks, projected to reach 9,380 by 2043. The structure is 602 ft (183.5 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Brighton Dam Road over Brighton Dam & Triadelph built?
It was built in 1944, making it 81 years old in 2025. It was reconstructed in 2001.
What condition is Brighton Dam Road over Brighton Dam & Triadelph 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 September 2023.
How much traffic does Brighton Dam Road over Brighton Dam & Triadelph carry?
About 7,106 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Brighton Dam Road over Brighton Dam & Triadelph?
The structure is 602 ft (183.5 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.
Who owns Brighton Dam Road over Brighton Dam & Triadelph?
It is owned by the County Highway Agency.