Sierra Road E over Prickly Pear Creek 077
FairLewis and Clark County, Montana · 5M NE Helena · Structure no. L25104002+02001
- Built
- 1998
- 27 years old
- Condition
- Fair
- inspected August 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 72 ft
- 1 main span
- Daily traffic
- 623
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Sierra Road E over Prickly Pear Creek 077 is a prestressed concrete tee beam carrying Sierra Road E over Prickly Pear Creek 077 in Lewis and Clark County, Montana. It was built in 1998, so it is 27 years old, younger than the Montana average of 47 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 623 vehicles a day, roughly 1% of them trucks, projected to reach 660 by 2043. The structure is 72 ft (21.9 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sierra Road E over Prickly Pear Creek 077 built?
It was built in 1998, making it 27 years old in 2025.
What condition is Sierra Road E over Prickly Pear Creek 077 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 August 2023.
How much traffic does Sierra Road E over Prickly Pear Creek 077 carry?
About 623 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is Sierra Road E over Prickly Pear Creek 077?
The structure is 72 ft (21.9 m) long with a longest span of 72 ft (21.9 m) and a deck 26 ft wide.
Who owns Sierra Road E over Prickly Pear Creek 077?
It is owned by the County Highway Agency.