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Nearby Bridges in NBI 2021: 3


S 200 over INT BONNER I 90 (Route: 200)
Num:P00024000+00001x
Open: no restriction [A]
Built: 1965, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.4 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: Latex Concrete or similar additive [3]
Bridge Dimensions
Length: 74.3 m = 243.8 ft
Main Spans: 4 at 21.3 m = 69.9 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 8.4 m = 27.6 ft (2 Lanes) and Out-To-Out: 9.4 m = 30.8 ft for a 9.8 m = 32.2 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Missoula County [063], Montana [30]
Owned by State Highway Agency [01], DOT District: 1
1M W BONNER
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 42.6 metric ton = 46.9 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 21.8 metric ton = 24.0 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: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Better than present minimum criteria [7]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: June 2020 [0620] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 6440 (2019) and Trucks: 3%
Future ADT: 6762 (In 2039 )
I 90 over RR (Route: 90)
Num:I00090110+00331x
Open: no restriction [A]
Built: 1963, Reconstructed: 1994
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 100.2 m = 328.8 ft
Main Spans: 3 at 21 m = 68.9 ft
Approach Spans: 3
Skew: 0
Width, Roadway: 11.4 m = 37.4 ft (2 Lanes) and Out-To-Out: 12.5 m = 41.0 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]: Missoula County [063], Montana [30]
Owned by State Highway Agency [01], DOT District: 1
0.6M W BONNER
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 27.2 metric ton = 29.9 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 20.9 metric ton = 23.0 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: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 6349 (2019) and Trucks: 15%
Future ADT: 13776 (In 2039 )
I 90 over RR (Route: 90)
Num:I00090110+00332x
Open: no restriction [A]
Built: 1963, Reconstructed: 1994
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 109.4 m = 358.9 ft
Main Spans: 3 at 21 m = 68.9 ft
Approach Spans: 3
Skew: 0
Width, Roadway: 11.6 m = 38.1 ft (2 Lanes) and Out-To-Out: 12.5 m = 41.0 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]: Missoula County [063], Montana [30]
Owned by State Highway Agency [01], DOT District: 1
0.6M W BONNER
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 26.3 metric ton = 28.9 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: 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: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 6349 (2019) and Trucks: 15%
Future ADT: 13776 (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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