I0310 over MISSISSIPPI RIVER (Route: 310)
Num:24504503700001x
Open: no restriction [A]
Built: 1983, Reconstructed: N/A [0000]
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] Stayed girder [14]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 836.7 m = 2745.2 ft
Main Spans: 5 at 376.4 m = 1235.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 23.3 m = 76.4 ft (4 Lanes) and Out-To-Out: 28.2 m = 92.5 ft for a 24.4 m = 80.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 40.5 m = 132.9 ft

Location
New Orleans [55000]: St. Charles Parish [089], Louisiana [22]
Owned by State Highway Agency [01], DOT District: 2
I-310 OVER LA 48 AND LA 1

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 56.2 metric ton = 61.8 tons (Load Factor(LF) [1])
Inventory: 33.6 metric ton = 37.0 tons (Load Factor(LF) [1])

Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Countermeasures have been installed to mitigate an existing problem with scour. [7]
Inspections
Date: February 1999 [299] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 15.9 km = 9.9 mi
Traffic
ADT: 53600 (2016) and Trucks: 25%
Future ADT: 93160 (In 2036 )

I0310 over LA 18 & M. P. RR (Route: 310)
Num:24504503800001x
Open: no restriction [A]
Built: 1979, Reconstructed: N/A [0000]
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): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 579.1 m = 1900.0 ft
Main Spans: 14 at 61 m = 200.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 23.2 m = 76.1 ft (4 Lanes) and Out-To-Out: 26.6 m = 87.3 ft for a 25.3 m = 83.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
New Orleans [55000]: St. Charles Parish [089], Louisiana [22]
Owned by State Highway Agency [01], DOT District: 2
2.45E+12

Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 51.7 metric ton = 56.9 tons (Load Factor(LF) [1])
Inventory: 30.8 metric ton = 33.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: October 2020 [1020] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 15.9 km = 9.9 mi
Traffic
ADT: 40300 (2016) and Trucks: 25%
Future ADT: 70550 (In 2036 )

I0310 over M P RR (Route: 310)
Num:24504503800055x
Open: no restriction [A]
Built: 1979, 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): Steel [3] Stringer/Multi-beam or girder [02]
Approach Span(s): Prestressed concrete continuous [6] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 382.8 m = 1256.0 ft
Main Spans: 1 at 37.8 m = 124.0 ft
Approach Spans: 15
Skew: 0
Width, Roadway: 7.6 m = 24.9 ft (1 Lanes) and Out-To-Out: 8.6 m = 28.2 ft for a 13.4 m = 44.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
New Orleans [55000]: St. Charles Parish [089], Louisiana [22]
Owned by State Highway Agency [01], DOT District: 2
.05 MI SOUTH OF LA 18

Condition
Deck: Good [7]
Superstructure: Very Good [8]
Substructure: Very Good [8]
Loading
Design: MS 18 / HS 20 [5]
Operating: 77.1 metric ton = 84.8 tons (Load Factor(LF) [1])
Inventory: 41.7 metric ton = 45.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present desirable criteria [8]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: September 2020 [0920] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 4030 (2016) and Trucks: 25%
Future ADT: 7055 (In 2036 )

I0310 over M P RR (Route: 310)
Num:24504503800206x
Open: no restriction [A]
Built: 1979, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.5 Miles (0.8 Kilometers)

Bridge Type
Main Span(s): Steel [3] Girder and floorbeam system [03]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 425.2 m = 1395.1 ft
Main Spans: 13 at 39.6 m = 129.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.9 m = 25.9 ft (1 Lanes) and Out-To-Out: 8.9 m = 29.2 ft for a 7.9 m = 25.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
New Orleans [55000]: St. Charles Parish [089], Louisiana [22]
Owned by State Highway Agency [01], DOT District: 2
.2 MI SOUTH OF LA 18

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 49.9 metric ton = 54.9 tons (Load Factor(LF) [1])
Inventory: 29.9 metric ton = 32.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Equal to present desirable criteria [8]
Road Alignment: Better than present minimum criteria [7]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: October 2020 [1020] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 4030 (2016) and Trucks: 25%
Future ADT: 7055 (In 2036 )