US Bridges

Beaver Creek RD over Beaver Creek 142

Good

Lewis and Clark County, Montana · 2M W Nelson · Structure no. L25116002+02001

Built
2001
24 years old
Condition
Good
inspected August 2023
Type
Channel Beam
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Beaver Creek RD over Beaver Creek 142 is a prestressed concrete channel beam carrying Beaver Creek RD over Beaver Creek 142 in Lewis and Clark County, Montana. It was built in 2001, so it is 24 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 52 ft (15.7 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesBeaver Creek RD
CrossesBeaver Creek 142
Location2M W Nelson
RouteCounty Highway 25116
StateMontana
Coordinates46.80008, -111.84514
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length52 ft (15.7 m)
Longest span50 ft (15.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 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 closed123.7 mi (199 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 Beaver Creek RD over Beaver Creek 142 built?

It was built in 2001, making it 24 years old in 2025.

What condition is Beaver Creek RD over Beaver Creek 142 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 August 2023.

How much traffic does Beaver Creek RD over Beaver Creek 142 carry?

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

How long is Beaver Creek RD over Beaver Creek 142?

The structure is 52 ft (15.7 m) long with a longest span of 50 ft (15.3 m) and a deck 24 ft wide.

Who owns Beaver Creek RD over Beaver Creek 142?

It is owned by the County Highway Agency.