US Bridges

Crackerville RD over RR 001

Fair

Deer Lodge County, Montana · 4M S Opportunity · Structure no. L12079000+04001

Built
1946
79 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
138 ft
3 main spans
Daily traffic
525
2023 count
Owner
State
State Highway Agency

About this bridge

Crackerville RD over RR 001 is a steel stringer/multi-beam or girder carrying Crackerville RD over RR 001 in Deer Lodge County, Montana. It was built in 1946, so it is 79 years old, older 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 5 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 525 vehicles a day, roughly 25% of them trucks, projected to reach 562 by 2043. The structure is 138 ft (42.1 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCrackerville RD
CrossesRR 001
Location4M S Opportunity
RouteState Highway 81012
CountyDeer Lodge County
StateMontana
Coordinates46.06243, -112.79611
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length138 ft (42.1 m)
Longest span56 ft (17.1 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2023)
Projected traffic562 by 2043
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Crackerville RD over RR 001 built?

It was built in 1946, making it 79 years old in 2025.

What condition is Crackerville RD over RR 001 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 February 2024.

How much traffic does Crackerville RD over RR 001 carry?

About 525 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is Crackerville RD over RR 001?

The structure is 138 ft (42.1 m) long with a longest span of 56 ft (17.1 m) and a deck 34 ft wide.

Who owns Crackerville RD over RR 001?

It is owned by the State Highway Agency.