US Bridges

Wise River RD over Miller Creek 116

Good

Missoula County, Montana · Missoula · Structure no. L32991000+01001

Built
2002
23 years old
Condition
Good
inspected September 2023
Type
Channel Beam
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Wise River RD over Miller Creek 116 is a prestressed concrete channel beam carrying Wise River RD over Miller Creek 116 in Missoula County, Montana. It was built in 2002, so it is 23 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 65 ft (19.8 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesWise River RD
CrossesMiller Creek 116
LocationMissoula
RouteCounty Highway 32991
StateMontana
Coordinates46.79018, -114.05157
Functional classUrban 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 protection9 ExcellentNo problems noted.
Last inspectionSeptember 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 alignment6: Equal to present minimum criteria
Operating rating26 US tons
Inventory rating13 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span64 ft (19.5 m)
Deck width30 ft (9.1 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 Wise River RD over Miller Creek 116 built?

It was built in 2002, making it 23 years old in 2025.

What condition is Wise River RD over Miller Creek 116 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 September 2023.

How much traffic does Wise River RD over Miller Creek 116 carry?

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

How long is Wise River RD over Miller Creek 116?

The structure is 65 ft (19.8 m) long with a longest span of 64 ft (19.5 m) and a deck 30 ft wide.

Who owns Wise River RD over Miller Creek 116?

It is owned by the County Highway Agency.