US Bridges

Mchugh LN over Ten Mile Creek 087

Good

Lewis and Clark County, Montana · 2M N Helena · Structure no. M25058000+00501

Built
1989
36 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
1,893
2023 count
Owner
County
County Highway Agency

About this bridge

Mchugh LN over Ten Mile Creek 087 is a concrete continuous slab carrying Mchugh LN over Ten Mile Creek 087 in Lewis and Clark County, Montana. It was built in 1989, so it is 36 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 1,893 vehicles a day, projected to reach 2,224 by 2043. The structure is 39 ft (11.9 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMchugh LN
CrossesTen Mile Creek 087
Location2M N Helena
RouteCity Street 25058
StateMontana
Coordinates46.63425, -112.03191
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating16.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span27 ft (8.2 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,893 (2023)
Projected traffic2,224 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Mchugh LN over Ten Mile Creek 087 built?

It was built in 1989, making it 36 years old in 2025.

What condition is Mchugh LN over Ten Mile Creek 087 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 March 2023.

How much traffic does Mchugh LN over Ten Mile Creek 087 carry?

About 1,893 vehicles per day (2023 count).

How long is Mchugh LN over Ten Mile Creek 087?

The structure is 39 ft (11.9 m) long with a longest span of 27 ft (8.2 m) and a deck 42 ft wide.

Who owns Mchugh LN over Ten Mile Creek 087?

It is owned by the County Highway Agency.