N 49th ST (cr 51) over Left Hand Creek
GoodBoulder County, Colorado · 0.5 MI N of CO RD 34 · Structure no. BC-51-5.3-LT1
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected February 2025
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete
- Length
- 58 ft
- 1 main span
- Daily traffic
- 191
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N 49th ST (cr 51) over Left Hand Creek is a prestressed concrete box beam or girders - single or spread carrying N 49th ST (cr 51) over Left Hand Creek in Boulder County, Colorado. It was built in 1993, so it is 32 years old, younger than the Colorado average of 42.2 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 191 vehicles a day, roughly 14% of them trucks, projected to reach 229 by 2042. The structure is 58 ft (17.7 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 N 49th ST (cr 51) over Left Hand Creek built?
It was built in 1993, making it 32 years old in 2025.
What condition is N 49th ST (cr 51) over Left Hand Creek 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 2025.
How much traffic does N 49th ST (cr 51) over Left Hand Creek carry?
About 191 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is N 49th ST (cr 51) over Left Hand Creek?
The structure is 58 ft (17.7 m) long with a longest span of 54 ft (16.5 m) and a deck 35 ft wide.
Who owns N 49th ST (cr 51) over Left Hand Creek?
It is owned by the County Highway Agency.