Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Wood or Timber [7]
Bridge Dimensions
Length: 25 m = 82.0 ft
Main Spans: 1 at 24.4 m = 80.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.5 m = 14.8 ft (1 Lanes) and Out-To-Out: 4.9 m = 16.1 ft for a 5.2 m = 17.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Gallatin County [031], Montana [30]
Owned by County Highway Agency [02], DOT District: 2
3M E MANHATTAN
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Fair [5]
Loading
Design:
Operating: 9.1 metric ton = 10.0 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 7.3 metric ton = 8.0 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 2020 [0620] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 5.3 km = 3.3 mi
Traffic
ADT: 100 (2004) and Trucks: 0%
Future ADT: 100 (In 2026
)
