US Bridges

Miles Crossing over Silver Bow Creek 010

Fair

Silver Bow County, Montana · 2M W Ramsey · Structure no. L47528008+08001

Built
2007
18 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
38
2023 count
Owner
County
County Highway Agency

About this bridge

Miles Crossing over Silver Bow Creek 010 is a steel stringer/multi-beam or girder carrying Miles Crossing over Silver Bow Creek 010 in Silver Bow County, Montana. It was built in 2007, so it is 18 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 38 vehicles a day, roughly 3% of them trucks, projected to reach 41 by 2043. The structure is 40 ft (12.2 m) long and 15 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMiles Crossing
CrossesSilver Bow Creek 010
Location2M W Ramsey
RouteCounty Highway 47528
StateMontana
Coordinates46.01261, -112.72608
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating48 US tons
Inventory rating29 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38 (2023)
Projected traffic41 by 2043
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$30,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Miles Crossing over Silver Bow Creek 010 built?

It was built in 2007, making it 18 years old in 2025.

What condition is Miles Crossing over Silver Bow Creek 010 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 2024.

How much traffic does Miles Crossing over Silver Bow Creek 010 carry?

About 38 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Miles Crossing over Silver Bow Creek 010?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 15 ft wide.

Who owns Miles Crossing over Silver Bow Creek 010?

It is owned by the County Highway Agency.