US Bridges

19th Street over Rock Creek 059

Good

Carbon County, Montana · Red LODGE-19th ST · Structure no. M05093000+00101

Built
2012
13 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
361
2023 count
Owner
County
County Highway Agency

About this bridge

19th Street over Rock Creek 059 is a prestressed concrete box beam or girders - multiple carrying 19th Street over Rock Creek 059 in Carbon County, Montana. It was built in 2012, so it is 13 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 361 vehicles a day, roughly 3% of them trucks, projected to reach 384 by 2043. The structure is 62 ft (18.9 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries19th Street
CrossesRock Creek 059
LocationRed LODGE-19th ST
RouteCity Street 5093
StateMontana
Coordinates45.17899, -109.24638
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating43.5 US tons
Inventory rating29.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic361 (2023)
Projected traffic384 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 19th Street over Rock Creek 059 built?

It was built in 2012, making it 13 years old in 2025.

What condition is 19th Street over Rock Creek 059 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 November 2024.

How much traffic does 19th Street over Rock Creek 059 carry?

About 361 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 19th Street over Rock Creek 059?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns 19th Street over Rock Creek 059?

It is owned by the County Highway Agency.