Irr# County RD 310 over Florida River
GoodLa Plata County, Colorado · .3 MI SE of SH 550 · Structure no. M40M505 088
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 89 ft
- 1 main span
- Daily traffic
- 2,119
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Irr# County RD 310 over Florida River is a prestressed concrete stringer/multi-beam or girder carrying Irr# County RD 310 over Florida River in La Plata County, Colorado. It was built in 1977, so it is 48 years old, older 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 2,119 vehicles a day, roughly 5% of them trucks, projected to reach 2,501 by 2042. The structure is 89 ft (27.2 m) long and 33 ft wide. If it were closed, the detour would be 18 mi (29 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irr# County RD 310 over Florida River built?
It was built in 1977, making it 48 years old in 2025.
What condition is Irr# County RD 310 over Florida River 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 October 2024.
How much traffic does Irr# County RD 310 over Florida River carry?
About 2,119 vehicles per day (2022 count), of which roughly 5% are trucks.
How long is Irr# County RD 310 over Florida River?
The structure is 89 ft (27.2 m) long with a longest span of 85 ft (26 m) and a deck 33 ft wide.
Who owns Irr# County RD 310 over Florida River?
It is owned by the County Highway Agency.