US Bridges

Paradise Valley RD over Six Mile Creek 028

Fair

Blaine County, Montana · 4M SE Chinook · Structure no. L03305002+04001

Built
1975
50 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Paradise Valley RD over Six Mile Creek 028 is a steel stringer/multi-beam or girder carrying Paradise Valley RD over Six Mile Creek 028 in Blaine County, Montana. It was built in 1975, so it is 50 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.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 37 ft (11.3 m) long and 24 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesParadise Valley RD
CrossesSix Mile Creek 028
Location4M SE Chinook
RouteCounty Highway 3300
StateMontana
Coordinates48.56138, -109.16535
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span33 ft (10.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 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 closed11.2 mi (18 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 Paradise Valley RD over Six Mile Creek 028 built?

It was built in 1975, making it 50 years old in 2025.

What condition is Paradise Valley RD over Six Mile Creek 028 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 Paradise Valley RD over Six Mile Creek 028 carry?

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

How long is Paradise Valley RD over Six Mile Creek 028?

The structure is 37 ft (11.3 m) long with a longest span of 33 ft (10.2 m) and a deck 24 ft wide.

Who owns Paradise Valley RD over Six Mile Creek 028?

It is owned by the County Highway Agency.