US Bridges

Elk Creek RD over Elk Creek 043

Good

Lewis and Clark County, Montana · 10M SW Augusta · Structure no. L25422000+03001

Built
2010
15 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Elk Creek RD over Elk Creek 043 is a prestressed concrete tee beam carrying Elk Creek RD over Elk Creek 043 in Lewis and Clark 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 good condition with a lowest component rating of 8 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 57 ft (17.4 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesElk Creek RD
CrossesElk Creek 043
Location10M SW Augusta
RouteCounty Highway 25422
StateMontana
Coordinates47.36719, -112.50258
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span55 ft (16.8 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 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 Elk Creek RD over Elk Creek 043 built?

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

What condition is Elk Creek RD over Elk Creek 043 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 October 2024.

How much traffic does Elk Creek RD over Elk Creek 043 carry?

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

How long is Elk Creek RD over Elk Creek 043?

The structure is 57 ft (17.4 m) long with a longest span of 55 ft (16.8 m) and a deck 26 ft wide.

Who owns Elk Creek RD over Elk Creek 043?

It is owned by the County Highway Agency.