Dennis Avenue over Sligo Creek Tributary
PoorPosted for loadMontgomery County, Maryland · 0.32 Miles East of Md 97 · Structure no. 200000M-0194010
- Built
- 1961
- 64 years old
- Condition
- Poor
- inspected July 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 8,590
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Dennis Avenue over Sligo Creek Tributary is a prestressed concrete slab carrying Dennis Avenue over Sligo Creek Tributary in Montgomery County, Maryland. It was built in 1961, so it is 64 years old, older than the Maryland average of 52.6 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. Its operating status is: posted for load restriction.
It carries about 8,590 vehicles a day, roughly 5% of them trucks, projected to reach 10,492 by 2043. The structure is 34 ft (10.4 m) long and 47 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 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Dennis Avenue over Sligo Creek Tributary built?
It was built in 1961, making it 64 years old in 2025.
What condition is Dennis Avenue over Sligo Creek Tributary 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 July 2023.
How much traffic does Dennis Avenue over Sligo Creek Tributary carry?
About 8,590 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Dennis Avenue over Sligo Creek Tributary?
The structure is 34 ft (10.4 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.
Who owns Dennis Avenue over Sligo Creek Tributary?
It is owned by the County Highway Agency.