120th Street over Nwp
FairBroomfield County, Colorado · 4.77 MI from I-25 · Structure no. NWP-04.77
- Built
- 2002
- 23 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 290 ft
- 2 main spans
- Daily traffic
- 4,189
- 2020 count
- Owner
- Toll Authority
- Local Toll Authority
About this bridge
120th Street over Nwp is a prestressed concrete continuous stringer/multi-beam or girder carrying 120th Street over Nwp in Broomfield County, Colorado. It was built in 2002, so it is 23 years old, younger 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 4,189 vehicles a day, roughly 5% of them trucks, projected to reach 10,000 by 2040. The structure is 290 ft (88.5 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 120th Street over Nwp built?
It was built in 2002, making it 23 years old in 2025.
What condition is 120th Street over Nwp 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 June 2023.
How much traffic does 120th Street over Nwp carry?
About 4,189 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is 120th Street over Nwp?
The structure is 290 ft (88.5 m) long with a longest span of 139 ft (42.4 m) and a deck 39 ft wide.
Who owns 120th Street over Nwp?
It is owned by the Local Toll Authority.