US Bridges

Miner Lake RD over Governor Creek 092

Poor

Beaverhead County, Montana · 1M SW Jackson · Structure no. L01095000+07001

Built
1951
74 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Miner Lake RD over Governor Creek 092 is a steel stringer/multi-beam or girder carrying Miner Lake RD over Governor Creek 092 in Beaverhead County, Montana. It was built in 1951, so it is 74 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 42 ft (12.8 m) long and 22 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesMiner Lake RD
CrossesGovernor Creek 092
Location1M SW Jackson
RouteCounty Highway 1095
StateMontana
Coordinates45.36098, -113.42368
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating32 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span42 ft (12.8 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$83,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Miner Lake RD over Governor Creek 092 built?

It was built in 1951, making it 74 years old in 2025.

What condition is Miner Lake RD over Governor Creek 092 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Miner Lake RD over Governor Creek 092 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Miner Lake RD over Governor Creek 092?

The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 22 ft wide.

Who owns Miner Lake RD over Governor Creek 092?

It is owned by the County Highway Agency.