US Bridges

S 359 over Bricker Sparrow Ditch

Fair

Madison County, Montana · Jefferson Island · Structure no. S00359002+08211

Built
1958
67 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
38 ft
2 main spans
Daily traffic
1,429
2023 count
Owner
State
State Highway Agency

About this bridge

S 359 over Bricker Sparrow Ditch is a wood or timber stringer/multi-beam or girder carrying S 359 over Bricker Sparrow Ditch in Madison County, Montana. It was built in 1958, so it is 67 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 1,429 vehicles a day, roughly 5% of them trucks, projected to reach 1,579 by 2043. The structure is 38 ft (11.6 m) long and 31 ft wide. If it were closed, the detour would be 46 mi (74 km).

Location

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CarriesS 359
CrossesBricker Sparrow Ditch
LocationJefferson Island
RouteState Highway 359
CountyMadison County
StateMontana
Coordinates45.8517, -111.94143
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating36 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 15
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,429 (2023)
Projected traffic1,579 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed46 mi (74 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 S 359 over Bricker Sparrow Ditch built?

It was built in 1958, making it 67 years old in 2025.

What condition is S 359 over Bricker Sparrow Ditch 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 September 2024.

How much traffic does S 359 over Bricker Sparrow Ditch carry?

About 1,429 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S 359 over Bricker Sparrow Ditch?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns S 359 over Bricker Sparrow Ditch?

It is owned by the State Highway Agency.