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Nearby Bridges in NBI 2021: 2


IS 70 W over MISSOURI RVR: CST MAIN S (Route: 70)
Num:6672x
Open: no restriction [A]
Built: 1958, Reconstructed: 2011
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): Steel continuous [4] Truss - Thru [10]
Approach Span(s): Steel continuous [4] 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: 1244.5 m = 4083.2 ft
Main Spans: 3 at 146.3 m = 480.0 ft
Approach Spans: 17
Skew: 0
Width, Roadway: 18.3 m = 60.0 ft (5 Lanes) and Out-To-Out: 19.1 m = 62.7 ft for a 20.7 m = 67.9 ft approaching roadway.
Vertical Clearance: 6.05 m = 19.9 ft and Navigational Clearance: 16.1 m = 52.8 ft
Location
St. Charles [64082]: St. Louis County [189], Missouri [29]
Owned by State Highway Agency [01], DOT District: 5
S 32 T 47 N R 5 E
Condition
Deck: Very Good [8]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 59.4 metric ton = 65.3 tons (Load Factor(LF) [1])
Inventory: 36 metric ton = 39.6 tons (Load Factor(LF) [1])
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: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 1999 [1099] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 71583 (2019) and Trucks: 12%
Future ADT: 89478 (In 2039 )
IS 70 E over MISSOURI RVR: CST MAIN S (Route: 70)
Num:2784x
Open: no restriction [A]
Built: 1978, Reconstructed: 1984
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): Steel continuous [4] Truss - Thru [10]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Low slump Concrete [4]
Bridge Dimensions
Length: 1155.8 m = 3792.2 ft
Main Spans: 3 at 146.3 m = 480.0 ft
Approach Spans: 16
Skew: 0
Width, Roadway: 20.5 m = 67.3 ft (5 Lanes) and Out-To-Out: 22.4 m = 73.5 ft for a 20.7 m = 67.9 ft approaching roadway.
Vertical Clearance: 5.49 m = 18.0 ft and Navigational Clearance: 16.1 m = 52.8 ft
Location
St. Charles [64082]: St. Charles County [183], Missouri [29]
Owned by State Highway Agency [01], DOT District: 5
S 3280 T 46 N R 5 E
Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 58.5 metric ton = 64.4 tons (Load Factor(LF) [1])
Inventory: 35.1 metric ton = 38.6 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: July 2020 [0720] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 64918 (2020) and Trucks: 12%
Future ADT: 110360 (In 2040 )

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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