Duck Key Drive over Duck Key Channel (Route: 0)
Num:904602x
Open: no restriction [A]
Built: 1955, Reconstructed: 1982
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Arch - Deck [11]
Approach Span(s): Other [00]
Deck: Not applicable [N] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 23.5 m = 77.1 ft
Main Spans: 3 at 8.6 m = 28.2 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7 m = 23.0 ft (2 Lanes) and Out-To-Out: 8 m = 26.2 ft for a 6.6 m = 21.7 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Marathon [43000]: Monroe County [087], Florida [12]
Owned by County Highway Agency [02], DOT District: 6
0.5 Mile E of US1 MM 61.1

Condition
Deck: Not Applicable [N]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 39.5 metric ton = 43.5 tons (Load Factor(LF) [1])
Inventory: 27.6 metric ton = 30.4 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge is scour critical; field review indicates that extensive scour has occurred at bridge foundations. [2]
Inspections
Date: March 2020 [0320] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 830 (2020) and Trucks: 2%
Future ADT: 1363 (In 2042 )

Seaview Drive over Duck Key Canal (Route: 0)
Num:904606x
Posted for load [P]
Built: 1955, Reconstructed: 1982
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): Prestressed concrete [5] Channel beam [22]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 17.1 m = 56.1 ft
Main Spans: 1 at 17.1 m = 56.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.9 m = 22.6 ft (2 Lanes) and Out-To-Out: 8 m = 26.2 ft for a 6.2 m = 20.3 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 3.6 m = 11.8 ft

Location
Marathon [43000]: Monroe County [087], Florida [12]
Owned by County Highway Agency [02], DOT District: 6
1.4Miles E of US-1 MM61

Condition
Deck: Good [7]
Superstructure: Serious [3]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 4.5 metric ton = 5.0 tons (Load Factor(LF) [1])
Inventory: 0 metric ton = 0.0 tons (Load Factor(LF) [1])

Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Better than present minimum criteria [7] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: March 2020 [0320] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 530 (2014) and Trucks: 2%
Future ADT: 765 (In 2039 )

Bimini Drive over Sams Canal (Route: 0)
Num:904603x
Posted for load [P]
Built: 1955, Reconstructed: 1982
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Channel beam [22]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 13 m = 42.7 ft
Main Spans: 1 at 12.5 m = 41.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7 m = 23.0 ft (2 Lanes) and Out-To-Out: 7.8 m = 25.6 ft for a 6.7 m = 22.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 3.6 m = 11.8 ft

Location
Key Colony Beach [36325]: Monroe County [087], Florida [12]
Owned by County Highway Agency [02], DOT District: 6
1Mile E of SR5 at MM 61.1

Condition
Deck: Fair [5]
Superstructure: Serious [3]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 11.7 metric ton = 12.9 tons (Load Factor(LF) [1])
Inventory: 0 metric ton = 0.0 tons (Load Factor(LF) [1])

Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: March 2020 [0320] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 539 (2014) and Trucks: 2%
Future ADT: 876 (In 2039 )

Duck Key Drive over Toms Harbor Channel (Route: 0)
Num:904600x
Open: no restriction [A]
Built: 1967, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.7 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:

Bridge Dimensions
Length: 75.6 m = 248.0 ft
Main Spans: 5 at 15.1 m = 49.5 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 10.5 m = 34.5 ft for a 7.3 m = 24.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Marathon [43000]: Monroe County [087], Florida [12]
Owned by County Highway Agency [02], DOT District: 6
50Ft. E of US-1 MM61

Condition
Deck: Very Good [8]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: HL93 [A]
Operating: 43.7 metric ton = 48.1 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 33.3 metric ton = 36.6 tons (Load and Resistance Factor(LRFR) [3])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Better than present minimum criteria [7]
Waterway: Better than present minimum criteria [7] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: August 1999 [899] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 1609 (2015) and Trucks: 4%
Future ADT: 3032 (In 2037 )

Harbour Drive over Joes Canal (Route: 0)
Num:904604x
Posted for load [P]
Built: 1955, Reconstructed: 1982
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.5 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Channel beam [22]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 17 m = 55.8 ft
Main Spans: 1 at 16.4 m = 53.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.1 m = 23.3 ft (2 Lanes) and Out-To-Out: 8.1 m = 26.6 ft for a 5.9 m = 19.4 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 3.6 m = 11.8 ft

Location
Marathon [43000]: Monroe County [087], Florida [12]
Owned by County Highway Agency [02], DOT District: 6
1.1Miles E of SR5 MM 61.1

Condition
Deck: Fair [5]
Superstructure: Serious [3]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 4.5 metric ton = 5.0 tons (Load Factor(LF) [1])
Inventory: 0 metric ton = 0.0 tons (Load Factor(LF) [1])

Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: March 2020 [0320] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 517 (2014) and Trucks: 2%
Future ADT: 584 (In 2039 )