US Bridges

Ekegren RD over Thirty Mile Creek 127

FairPosted for load

Blaine County, Montana · 4M E Harlem · Structure no. L03058001+00001

Built
1930
95 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
3 main spans
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Ekegren RD over Thirty Mile Creek 127 is a steel stringer/multi-beam or girder carrying Ekegren RD over Thirty Mile Creek 127 in Blaine County, Montana. It was built in 1930, so it is 95 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 73 ft (22.3 m) long and 20 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesEkegren RD
CrossesThirty Mile Creek 127
Location4M E Harlem
RouteCounty Highway 3170
StateMontana
Coordinates48.50442, -108.71583
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating16 US tons
Inventory rating13 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans3
Design loadUnknown
Structure length73 ft (22.3 m)
Longest span36 ft (11.1 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 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 closed9.9 mi (16 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 Ekegren RD over Thirty Mile Creek 127 built?

It was built in 1930, making it 95 years old in 2025.

What condition is Ekegren RD over Thirty Mile Creek 127 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 April 2023.

How much traffic does Ekegren RD over Thirty Mile Creek 127 carry?

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

How long is Ekegren RD over Thirty Mile Creek 127?

The structure is 73 ft (22.3 m) long with a longest span of 36 ft (11.1 m) and a deck 20 ft wide.

Who owns Ekegren RD over Thirty Mile Creek 127?

It is owned by the County Highway Agency.