Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 156.3 m = 512.8 ft
Main Spans: 5 at 50.6 m = 166.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 19.3 m = 63.3 ft (4 Lanes) and Out-To-Out: 22 m = 72.2 ft for a 19 m = 62.3 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Yellowstone County [111], Montana [30]
Owned by State Highway Agency [01], DOT District: 5
1M S LAUREL
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: HL93 [A]
Operating: 38.1 metric ton = 41.9 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 29.9 metric ton = 32.9 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Equal to present minimum criteria [6]
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 2020 [0720] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 10594 (2019) and Trucks: 4%
Future ADT: 12024 (In 2039
)