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: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 151.4 m = 496.7 ft
Main Spans: 4 at 50 m = 164.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 18 m = 59.1 ft (4 Lanes) and Out-To-Out: 23.8 m = 78.1 ft for a 18 m = 59.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Missoula [50200]: Missoula County [063], Montana [30]
Owned by State Highway Agency [01], DOT District: 1
MISSOULA-S ORANGE ST
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 29 metric ton = 31.9 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 20 metric ton = 22.0 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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: Superior to present desirable criteria [9] 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: 0.3 km = 0.2 mi
Traffic
ADT: 24415 (2019) and Trucks: 0%
Future ADT: 25636 (In 2039
)