US Bridges

Highwood RD over Belt Creek

Good

Cascade County, Montana · 6M S Highwood · Structure no. S00228016+04001

Built
2009
16 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
272 ft
3 main spans
Daily traffic
459
2023 count
Owner
State
State Highway Agency

About this bridge

Highwood RD over Belt Creek is a prestressed concrete stringer/multi-beam or girder carrying Highwood RD over Belt Creek in Cascade County, Montana. It was built in 2009, so it is 16 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 459 vehicles a day, roughly 3% of them trucks, projected to reach 482 by 2043. The structure is 272 ft (83 m) long and 32 ft wide. If it were closed, the detour would be 80.2 mi (129 km).

Location

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CarriesHighwood RD
CrossesBelt Creek
Location6M S Highwood
RouteState Highway 228
CountyCascade County
StateMontana
Coordinates47.54251, -110.88544
Functional classRural Major 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.
Substructure8 Very GoodNo problems noted.
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 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 alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length272 ft (83 m)
Longest span128 ft (39 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic459 (2023)
Projected traffic482 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed80.2 mi (129 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Highwood RD over Belt Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is Highwood RD over Belt Creek 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 Highwood RD over Belt Creek carry?

About 459 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Highwood RD over Belt Creek?

The structure is 272 ft (83 m) long with a longest span of 128 ft (39 m) and a deck 32 ft wide.

Who owns Highwood RD over Belt Creek?

It is owned by the State Highway Agency.