Structure L59209 · Phillips County, MT

1127: Dry Fork over Dry Fork Creek

Carries 1127: Dry Fork over Dry Fork Creek, 19 Mi SE Of US 191.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

30 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a girder bridge.

Built197947 years old
Length29.9 ft9.1 m
Daily traffic25counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateMontana
CountyPhillips
Location19 Mi SE Of US 191
Carries1127: Dry Fork
CrossesDry Fork Creek
Coordinates47.81765, -108.14010

Physical Characteristics

MaterialWood or Timber
DesignGirder and Floorbeam
Total Length29.9 ft (9.1 m)
Max Span27.6 ft (8.4 m)
Deck Width25.9 ft (7.9 m)
Deck Area71.9 sq m
Main Spans1
Year Built1979

Traffic

Avg Daily Traffic25 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerBureau of Land Management
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000L59209

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.