S 200 over Middle Fk Dearborn River
GoodLewis and Clark County, Montana · 25M NE Lincoln · Structure no. P00024097+09961
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 113 ft
- 1 main span
- Daily traffic
- 1,467
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 200 over Middle Fk Dearborn River is a prestressed concrete stringer/multi-beam or girder carrying S 200 over Middle Fk Dearborn River in Lewis and Clark County, Montana. It was built in 1993, so it is 32 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 1,467 vehicles a day, roughly 14% of them trucks, projected to reach 1,540 by 2043. The structure is 113 ft (34.4 m) long and 42 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 8 Very Good | No problems noted. |
| 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 S 200 over Middle Fk Dearborn River built?
It was built in 1993, making it 32 years old in 2025.
What condition is S 200 over Middle Fk Dearborn River 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 September 2023.
How much traffic does S 200 over Middle Fk Dearborn River carry?
About 1,467 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is S 200 over Middle Fk Dearborn River?
The structure is 113 ft (34.4 m) long with a longest span of 110 ft (33.5 m) and a deck 42 ft wide.
Who owns S 200 over Middle Fk Dearborn River?
It is owned by the State Highway Agency.