US Bridges

N Fork RD over Paradise Valley CANAL037

FairPosted for load

Blaine County, Montana · 5M SW Zurich · Structure no. L03325001+02001

Built
1933
92 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
28
2023 count
Owner
County
County Highway Agency

About this bridge

N Fork RD over Paradise Valley CANAL037 is a steel stringer/multi-beam or girder carrying N Fork RD over Paradise Valley CANAL037 in Blaine County, Montana. It was built in 1933, so it is 92 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 6 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 28 vehicles a day, roughly 3% of them trucks, projected to reach 30 by 2043. The structure is 35 ft (10.7 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesN Fork RD
CrossesParadise Valley CANAL037
Location5M SW Zurich
RouteCounty Highway 3308
StateMontana
Coordinates48.56834, -109.1113
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating39.2 US tons
Inventory rating23.6 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span33 ft (10.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28 (2023)
Projected traffic30 by 2043
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 N Fork RD over Paradise Valley CANAL037 built?

It was built in 1933, making it 92 years old in 2025.

What condition is N Fork RD over Paradise Valley CANAL037 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 N Fork RD over Paradise Valley CANAL037 carry?

About 28 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is N Fork RD over Paradise Valley CANAL037?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10.2 m) and a deck 24 ft wide.

Who owns N Fork RD over Paradise Valley CANAL037?

It is owned by the County Highway Agency.