15th ST over South Platte River
FairDenver County, Colorado · E of Platte Drive · Structure no. D-02-PR-070A
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 202 ft
- 2 main spans
- Daily traffic
- 11,374
- 2021 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
15th ST over South Platte River is a prestressed concrete continuous stringer/multi-beam or girder carrying 15th ST over South Platte River in Denver County, Colorado. It was built in 1975, so it is 50 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 11,374 vehicles a day, roughly 6% of them trucks, projected to reach 12,625 by 2041. The structure is 202 ft (61.6 m) long and 61 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 15th ST over South Platte River built?
It was built in 1975, making it 50 years old in 2025.
What condition is 15th ST over South Platte River 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 October 2024.
How much traffic does 15th ST over South Platte River carry?
About 11,374 vehicles per day (2021 count), of which roughly 6% are trucks.
How long is 15th ST over South Platte River?
The structure is 202 ft (61.6 m) long with a longest span of 99 ft (30.2 m) and a deck 61 ft wide.
Who owns 15th ST over South Platte River?
It is owned by the City or Municipal Highway Agency.