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Nearby Bridges in NBI 2021: 5


IRR - I 90 over LITTLE BIGHORN RIVER (Route: 90)
Num:I00090509+05611x
Open: no restriction [A]
Built: 1949, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0.1 Kilometers)

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: 39.6 m = 129.9 ft
Main Spans: 2 at 20.1 m = 65.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 10.4 m = 34.1 ft for a 11.6 m = 38.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Big Horn County [003], Montana [30]
Owned by State Highway Agency [01], DOT District: 5
0.6M S CROW AGENCY
Condition
Deck: Fair [5]
Superstructure: Satisfactory [6]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 64.4 metric ton = 70.8 tons (Load Factor(LF) [1])
Inventory: 38.1 metric ton = 41.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] 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: 0.1 km = 0.1 mi
Traffic
ADT: 3802 (2019) and Trucks: 23%
Future ADT: 8250 (In 2039 )
IRR - I 90 over LITTLE BIGHORN RIVER (Route: 90)
Num:I00090509+05612x
Open: no restriction [A]
Built: 1959, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 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: 50.1 m = 164.4 ft
Main Spans: 4 at 15.8 m = 51.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 9.7 m = 31.8 ft for a 11.6 m = 38.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Big Horn County [003], Montana [30]
Owned by State Highway Agency [01], DOT District: 5
0.6M S CROW AGENCY
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 45.4 metric ton = 49.9 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 26.3 metric ton = 28.9 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] 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: 0.1 km = 0.1 mi
Traffic
ADT: 3802 (2019) and Trucks: 23%
Future ADT: 8250 (In 2039 )
BALA ST over LITTLE BIGHORN RIVER 069 (Route: 2046)
Num:L02046011+03001x
Open: no restriction [A]
Built: 1958, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.3 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: 47.2 m = 154.9 ft
Main Spans: 3 at 15.8 m = 51.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 8.4 m = 27.6 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Big Horn County [003], Montana [30]
Owned by State Highway Agency [01], DOT District: 5
CROW AGENCY
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 13.5 / HS 15 [3]
Operating: 34.4 metric ton = 37.8 tons (Allowable Stress(AS) [2])
Inventory: 24.4 metric ton = 26.8 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Inspections
Date: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 100 (2001) and Trucks: 0%
Future ADT: 100 (In 2026 )
IRR - I 90 over INT CROW AGENCY (Route: 90)
Num:I00090509+02312x
Open: no restriction [A]
Built: 1959, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 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: Bituminous [6]
Bridge Dimensions
Length: 40.8 m = 133.9 ft
Main Spans: 3 at 15.8 m = 51.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 11.6 m = 38.1 ft (2 Lanes) and Out-To-Out: 12.7 m = 41.7 ft for a 11.6 m = 38.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Big Horn County [003], Montana [30]
Owned by State Highway Agency [01], DOT District: 5
CROW AGENCY
Condition
Deck: Fair [5]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 59 metric ton = 64.9 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 35.4 metric ton = 38.9 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: October 2020 [1020] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 4345 (2019) and Trucks: 20%
Future ADT: 9429 (In 2039 )
IRR - I 90 over INT CROW AGENCY (Route: 90)
Num:I00090509+02311x
Open: no restriction [A]
Built: 1959, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 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:
Bridge Dimensions
Length: 40.8 m = 133.9 ft
Main Spans: 3 at 15.8 m = 51.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 11.6 m = 38.1 ft (2 Lanes) and Out-To-Out: 12.6 m = 41.3 ft for a 11.6 m = 38.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Big Horn County [003], Montana [30]
Owned by State Highway Agency [01], DOT District: 5
CROW AGENCY
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 55.3 metric ton = 60.8 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 35.4 metric ton = 38.9 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: Equal to present minimum criteria [6]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: October 2020 [1020] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 4345 (2019) and Trucks: 20%
Future ADT: 9429 (In 2039 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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