US Bridges

US 93 over Mccalla Creek

Fair

Ravalli County, Montana · 5M N Victor · Structure no. P00007065+00651

Built
2010
15 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
10,026
2023 count
Owner
State
State Highway Agency

About this bridge

US 93 over Mccalla Creek is a prestressed concrete stringer/multi-beam or girder carrying US 93 over Mccalla Creek in Ravalli County, Montana. It was built in 2010, so it is 15 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 10,026 vehicles a day, roughly 2% of them trucks, projected to reach 10,878 by 2043. The structure is 67 ft (20.4 m) long and 90 ft wide. If it were closed, the detour would be 78.3 mi (126 km).

CarriesUS 93
CrossesMccalla Creek
Location5M N Victor
RouteU.S. Route 93
StateMontana
Coordinates46.49958, -114.12271
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length67 ft (20.4 m)
Longest span66 ft (20 m)
Deck width90 ft (27.4 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,026 (2023)
Projected traffic10,878 by 2043
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed78.3 mi (126 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$105,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 over Mccalla Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is US 93 over Mccalla Creek 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 October 2024.

How much traffic does US 93 over Mccalla Creek carry?

About 10,026 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is US 93 over Mccalla Creek?

The structure is 67 ft (20.4 m) long with a longest span of 66 ft (20 m) and a deck 90 ft wide.

Who owns US 93 over Mccalla Creek?

It is owned by the State Highway Agency.