Bridge Type
Main Span(s): Wood or timber [7] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 121.9 m = 400.0 ft
Main Spans: 21 at 5.8 m = 19.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.1 m = 20.0 ft (2 Lanes) and Out-To-Out: 6.5 m = 21.3 ft for a 6.1 m = 20.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Missoula County [063], Montana [30]
Owned by County Highway Agency [02], DOT District: 1
2M NW SEELEY LAKE
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Poor [4]
Loading
Design: M 13.5 / H 15 [2]
Operating: 31.8 metric ton = 35.0 tons (Allowable Stress(AS) [2])
Inventory: 22.7 metric ton = 25.0 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 1999 [1099] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 2.1 km = 1.3 mi
Traffic
ADT: 100 (2002) and Trucks: 0%
Future ADT: 100 (In 2026
)
