Hillbrooke Ave over Big Ditch 198
GoodYellowstone County, Montana · Laurel-Hillbrooke Ave · Structure no. M56069000+00901
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected March 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Hillbrooke Ave over Big Ditch 198 is a prestressed concrete tee beam carrying Hillbrooke Ave over Big Ditch 198 in Yellowstone County, Montana. It was built in 2006, so it is 19 years old, younger than the Montana average of 47 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 34 ft (10.4 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Hillbrooke Ave over Big Ditch 198 built?
It was built in 2006, making it 19 years old in 2025.
What condition is Hillbrooke Ave over Big Ditch 198 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 March 2024.
How much traffic does Hillbrooke Ave over Big Ditch 198 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Hillbrooke Ave over Big Ditch 198?
The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.
Who owns Hillbrooke Ave over Big Ditch 198?
It is owned by the County Highway Agency.