DUCK CREEK RD over YELLOWSTONE RIVER 020 (Route: 56302)
Num:L56302000+03001x
Open: no restriction [A]
Built: 1991, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] 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: 170 m = 557.8 ft
Main Spans: 5 at 34.1 m = 111.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 9.8 m = 32.2 ft for a 9.1 m = 29.9 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 County Highway Agency [02], DOT District: 5
SW BILLINGS

Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 32.7 metric ton = 36.0 tons (Unknown [A])
Inventory: 32.7 metric ton = 36.0 tons (Unknown [A])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: August 2020 [0820] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 2.6 km = 1.6 mi
Traffic
ADT: 100 (2001) and Trucks: 0%
Future ADT: 100 (In 2026 )

DUCK CREEK RD over DUCK CREEK 021 (Route: 56302)
Num:L56302000+08001x
Open: no restriction [A]
Built: 1992, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Tee beam [04]
Approach Span(s): Other [00]
Deck: Not applicable [N] with Wearing Surface:

Bridge Dimensions
Length: 18.3 m = 60.0 ft
Main Spans: 1 at 17.7 m = 58.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 9.2 m = 30.2 ft (2 Lanes) and Out-To-Out: 9.9 m = 32.5 ft for a 7.3 m = 24.0 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 County Highway Agency [02], DOT District: 5
SW BILLINGS

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 32.7 metric ton = 36.0 tons (Unknown [A])
Inventory: 32.7 metric ton = 36.0 tons (Unknown [A])

Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: January 2021 [0121] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 2.6 km = 1.6 mi
Traffic
ADT: 100 (2003) and Trucks: 0%
Future ADT: 100 (In 2027 )