SR 531 over ASHTABULA RIVER (Route: 531)
Num:406635x
Open: no restriction [A]
Built: 1925, Reconstructed: 2008
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Concrete [1] Slab [01]
Deck: Closed Grating [4] with Wearing Surface: Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]

Bridge Dimensions
Length: 68 m = 223.1 ft
Main Spans: 2 at 48.6 m = 159.5 ft
Approach Spans: 1
Skew: 0
Width, Roadway: 6.1 m = 20.0 ft (2 Lanes) and Out-To-Out: 7.3 m = 24.0 ft for a 6.1 m = 20.0 ft approaching roadway.
Vertical Clearance: 4.22 m = 13.8 ft and Navigational Clearance: 2.1 m = 6.9 ft

Location
Ashtabula [02638]: Ashtabula County [007], Ohio [39]
Owned by State Highway Agency [01], DOT District: 4
0.85 MI W OF SR 11

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 32.4 metric ton = 35.6 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 19.4 metric ton = 21.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])

Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: December 2020 [1220] and Frequency: 12

Future Work
Work Needed:
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 6767 (2015) and Trucks: 5%
Future ADT: 9393 (In 2038 )

SR 531 over OVER NORFOLK SOUTHERN RR (Route: 531)
Num:406694x
Open: no restriction [A]
Built: 1961, Reconstructed: 1998
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 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: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 99.1 m = 325.1 ft
Main Spans: 5 at 25 m = 82.0 ft
Approach Spans: 0
Skew: 51
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 10.8 m = 35.4 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
Ashtabula [02638]: Ashtabula County [007], Ohio [39]
Owned by State Highway Agency [01], DOT District: 4
0.59 MI W OF SR 11

Condition
Deck: Very Good [8]
Superstructure: Very Good [8]
Substructure: Very Good [8]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 42.1 metric ton = 46.3 tons (Allowable Stress (AS) rating reported by rating factor (RF) method using MS18 loading [7])
Inventory: 32.4 metric ton = 35.6 tons (Allowable Stress (AS) rating reported by rating factor (RF) method using MS18 loading [7])

Appraisal
Structural: Equal to present desirable criteria [8]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: December 2020 [1220] and Frequency: 12

Future Work
Work Needed:
Bridge Detour: 0.5 km = 0.3 mi
Traffic
ADT: 6767 (2015) and Trucks: 5%
Future ADT: 9393 (In 2038 )