US 85 Ml Nbnd over South Platte River
FairWeld County, Colorado · Evans · Structure no. C-18-K
- Built
- 1936
- 89 years old, rebuilt 1970
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 952 ft
- 19 main spans
- Daily traffic
- 12,500
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 85 Ml Nbnd over South Platte River is a steel continuous stringer/multi-beam or girder carrying US 85 Ml Nbnd over South Platte River in Weld County, Colorado. It was built in 1936 and reconstructed in 1970, so it is 89 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 5 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 12,500 vehicles a day, roughly 7% of them trucks, projected to reach 16,625 by 2040. The structure is 952 ft (290.2 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 85 Ml Nbnd over South Platte River built?
It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1970.
What condition is US 85 Ml Nbnd 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 November 2023.
How much traffic does US 85 Ml Nbnd over South Platte River carry?
About 12,500 vehicles per day (2020 count), of which roughly 7% are trucks.
How long is US 85 Ml Nbnd over South Platte River?
The structure is 952 ft (290.2 m) long with a longest span of 50 ft (15.2 m) and a deck 36 ft wide.
Who owns US 85 Ml Nbnd over South Platte River?
It is owned by the State Highway Agency.