120th Ave over Brantner Ditch
FairAdams County, Colorado · 2 MI W of US85 · Structure no. ADA120-08.8W306
- Built
- 2005
- 20 years old
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 124 ft
- 1 main span
- Daily traffic
- 9,217
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
120th Ave over Brantner Ditch is a prestressed concrete stringer/multi-beam or girder carrying 120th Ave over Brantner Ditch in Adams County, Colorado. It was built in 2005, so it is 20 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 9,217 vehicles a day, roughly 2% of them trucks, projected to reach 11,982 by 2041. The structure is 124 ft (37.9 m) long and 115 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 120th Ave over Brantner Ditch built?
It was built in 2005, making it 20 years old in 2025.
What condition is 120th Ave over Brantner Ditch 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 December 2023.
How much traffic does 120th Ave over Brantner Ditch carry?
About 9,217 vehicles per day (2021 count), of which roughly 2% are trucks.
How long is 120th Ave over Brantner Ditch?
The structure is 124 ft (37.9 m) long with a longest span of 118 ft (36.1 m) and a deck 115 ft wide.
Who owns 120th Ave over Brantner Ditch?
It is owned by the County Highway Agency.