3rd Ave WB over Gw RR
PoorBoulder County, Colorado · .15 MI W of JCT 119 · Structure no. LONG-3RDWB-GWRR
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 124 ft
- 3 main spans
- Daily traffic
- 9,116
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
3rd Ave WB over Gw RR is a steel continuous stringer/multi-beam or girder carrying 3rd Ave WB over Gw RR in Boulder County, Colorado. It was built in 1974, so it is 51 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 9,116 vehicles a day, roughly 15% of them trucks, projected to reach 10,939 by 2043. The structure is 124 ft (37.7 m) long and 44 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 3rd Ave WB over Gw RR built?
It was built in 1974, making it 51 years old in 2025.
What condition is 3rd Ave WB over Gw RR in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.
How much traffic does 3rd Ave WB over Gw RR carry?
About 9,116 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is 3rd Ave WB over Gw RR?
The structure is 124 ft (37.7 m) long with a longest span of 51 ft (15.5 m) and a deck 44 ft wide.
Who owns 3rd Ave WB over Gw RR?
It is owned by the City or Municipal Highway Agency.