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Nearby Bridges in NBI 2021: 1


CLIFF LAKE RD over MADISON RIVER 045 (Route: 29204)
Num:L29204000+06001x
Posted for load [P]
Built: 2001, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
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: 54.2 m = 177.8 ft
Main Spans: 1 at 54.2 m = 177.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6 m = 19.7 ft (2 Lanes) and Out-To-Out: 6.4 m = 21.0 ft for a 7 m = 23.0 ft approaching roadway.
Vertical Clearance: 3.89 m = 12.8 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Madison County [057], Montana [30]
Owned by County Highway Agency [02], DOT District: 2
36M S ENNIS
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design:
Operating: 23.6 metric ton = 26.0 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 18.1 metric ton = 19.9 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: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 2020 [0620] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1 km = 0.6 mi
Traffic
ADT: 100 (2002) and Trucks: 0%
Future ADT: 100 (In 2026 )

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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