Bridge Type
Main Span(s): Steel continuous [4] Truss - Thru [10]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:
Bridge Dimensions
Length: 193.8 m = 635.9 ft
Main Spans: 3 at 62.1 m = 203.8 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 7.9 m = 25.9 ft (2 Lanes) and Out-To-Out: 9.2 m = 30.2 ft for a 7.5 m = 24.6 ft approaching roadway.
Vertical Clearance: 4.57 m = 15.0 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Prairie County [079], Montana [30]
Owned by State Highway Agency [01], DOT District: 4
6M SW TERRY
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 13.5 / H 15 [2]
Operating: 20.9 metric ton = 23.0 tons (Load Factor(LF) [1])
Inventory: 12.7 metric ton = 14.0 tons (Load Factor(LF) [1])
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: Better than present minimum criteria [7] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: July 1999 [799] 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: 4.5 km = 2.8 mi
Traffic
ADT: 470 (2019) and Trucks: 0%
Future ADT: 494 (In 2039
)
