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Nearby Bridges in NBI 2021: 1


ROBERTS LANE over SILVER FK CR (Route: 241)
Num:19948x
Open: no restriction [A]
Built: 1982, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

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Rough Distance: 0.4 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Tee beam [04]
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: 15.5 m = 50.9 ft
Main Spans: 1 at 15.2 m = 49.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.7 m = 22.0 ft (2 Lanes) and Out-To-Out: 6.9 m = 22.6 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
Centralia [12916]: Boone County [019], Missouri [29]
Owned by County Highway Agency [02], DOT District: 4
S 33 T 51 N R 11 W
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Very Good [8]
Loading
Design: M 18 / H 20 [4]
Operating: 50.4 metric ton = 55.4 tons (Allowable Stress(AS) [2])
Inventory: 26.1 metric ton = 28.7 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Equal to present minimum criteria [6]
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: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: December 2020 [1220] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.5 km = 0.3 mi
Traffic
ADT: 40 (2018) and Trucks: 10%
Future ADT: 76 (In 2038 )

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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