Thunder Hill Road over Trib. to Little Patuxent
GoodHoward County, Maryland · 1/8 MI S of Md 108 · Structure no. 200000HO0275030
- Built
- 1972
- 53 years old
- Condition
- Good
- inspected February 2024
- Type
- Culvert
- Concrete
- Length
- 24 ft
- Daily traffic
- 220
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Thunder Hill Road over Trib. to Little Patuxent is a concrete culvert carrying Thunder Hill Road over Trib. to Little Patuxent in Howard County, Maryland. It was built in 1972, so it is 53 years old, older than the Maryland average of 52.6 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 220 vehicles a day, roughly 2% of them trucks, projected to reach 280 by 2046. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 98.8 mi (159 km).
Location
No coordinates are recorded for this structure.
Condition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thunder Hill Road over Trib. to Little Patuxent built?
It was built in 1972, making it 53 years old in 2025.
What condition is Thunder Hill Road over Trib. to Little Patuxent 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 February 2024.
How much traffic does Thunder Hill Road over Trib. to Little Patuxent carry?
About 220 vehicles per day (2024 count), of which roughly 2% are trucks.
How long is Thunder Hill Road over Trib. to Little Patuxent?
The structure is 24 ft (7.3 m) long with a longest span of 5 ft (1.5 m).
Who owns Thunder Hill Road over Trib. to Little Patuxent?
It is owned by the County Highway Agency.