SH 177 Ml over Big Dry Creek
FairArapahoe County, Colorado · Just No of Arapahoe Road · Structure no. F-17-AC
- Built
- 1968
- 57 years old, rebuilt 2019
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 64 ft
- 1 main span
- Daily traffic
- 29,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 177 Ml over Big Dry Creek is a steel stringer/multi-beam or girder carrying SH 177 Ml over Big Dry Creek in Arapahoe County, Colorado. It was built in 1968 and reconstructed in 2019, so it is 57 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 29,000 vehicles a day, roughly 2% of them trucks, projected to reach 29,580 by 2040. The structure is 64 ft (19.6 m) long and 79 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 | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 177 Ml over Big Dry Creek built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2019.
What condition is SH 177 Ml over Big Dry Creek 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 January 2025.
How much traffic does SH 177 Ml over Big Dry Creek carry?
About 29,000 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is SH 177 Ml over Big Dry Creek?
The structure is 64 ft (19.6 m) long with a longest span of 56 ft (17.1 m) and a deck 79 ft wide.
Who owns SH 177 Ml over Big Dry Creek?
It is owned by the State Highway Agency.