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Nearby Bridges in NBI 2021: 2


CR 789 (BLKBRN PT) over INTRACOASTAL WATERWAY (Route: 789)
Num:170064x
Open: no restriction [A]
Built: 1925, Reconstructed: 1995
Historic: Bridge is on the NRHP. [1]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Swing [17]
Approach Span(s): Other [00]
Deck: Open Grating [3] with Wearing Surface:
Bridge Dimensions
Length: 43.3 m = 142.1 ft
Main Spans: 1 at 43.3 m = 142.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.8 m = 15.7 ft (1 Lanes) and Out-To-Out: 4.9 m = 16.1 ft for a 5.2 m = 17.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 2.7 m = 8.9 ft
Location
Unknown [00000]: Sarasota County [115], Florida [12]
Owned by County Highway Agency [02], DOT District: 1
0.6MI W of US 41
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 35.6 metric ton = 39.2 tons (Allowable Stress(AS) [2])
Inventory: 28 metric ton = 30.8 tons (Allowable Stress(AS) [2])
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: Basically intolerable requiring high priority of replacement [2]
Waterway: Equal to present desirable criteria [8] and Countermeasures have been installed to mitigate an existing problem with scour. [7]
Inspections
Date: July 2020 [0720] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.4 km = 0.9 mi
Traffic
ADT: 1500 (2020) and Trucks: 4%
Future ADT: 1875 (In 2040 )
BLACKBURN POINT RD over DRYMAN BAY (Route: 789)
Num:174102x
Open: no restriction [A]
Built: 2001, 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] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 45.7 m = 149.9 ft
Main Spans: 4 at 11.4 m = 37.4 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.4 m = 24.3 ft (2 Lanes) and Out-To-Out: 11.9 m = 39.0 ft for a 7.4 m = 24.3 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Sarasota County [115], Florida [12]
Owned by County Highway Agency [02], DOT District: 1
0.7 MI W OF US-41
Condition
Deck: Very Good [8]
Superstructure: Very Good [8]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 99.9 metric ton = 109.9 tons (Load Factor(LF) [1])
Inventory: 58.8 metric ton = 64.7 tons (Load Factor(LF) [1])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
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: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 1500 (2019) and Trucks: 4%
Future ADT: 2602 (In 2041 )

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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