Bridge Type
Main Span(s): Prestressed concrete continuous [6] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:
Bridge Dimensions
Length: 98.3 m = 322.5 ft
Main Spans: 3 at 33 m = 108.3 ft
Approach Spans: 0
Skew: 10
Width, Roadway: 12 m = 39.4 ft (2 Lanes) and Out-To-Out: 12.7 m = 41.7 ft for a 12 m = 39.4 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Madison County [057], Montana [30]
Owned by State Highway Agency [01], DOT District: 2
ENNIS
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 61.1 metric ton = 67.2 tons (Load Factor(LF) [1])
Inventory: 36.7 metric ton = 40.4 tons (Load Factor(LF) [1])
Appraisal
Structural: Better than present minimum criteria [7]
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 the assessed or calculated scour condition. [8]
Inspections
Date: July 1999 [799] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 3127 (2019) and Trucks: 8%
Future ADT: 3330 (In 2039
)