I-39/US 51 over MACKINAW RIVER (Route: 39)
Num:57020300000000x
Open: no restriction [A]
Built: 1989, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.2 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: 131.6 m = 431.8 ft
Main Spans: 3 at 49.7 m = 163.1 ft
Approach Spans: 0
Skew: 46
Width, Roadway: 26.7 m = 87.6 ft (4 Lanes) and Out-To-Out: 28.4 m = 93.2 ft for a 24.4 m = 80.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: McLean County [113], Illinois [17]
Owned by State Highway Agency [01], DOT District: 5
8.8 MI N OF I-55

Condition
Deck: Satisfactory [6]
Superstructure: Poor [4]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 43.1 metric ton = 47.4 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 25.6 metric ton = 28.2 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: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 2020 [1020] and Frequency: 12

Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 18500 (2017) and Trucks: 32%
Future ADT: 17872 (In 2032 )

IL 251 FAS 255 over MACKINAW RIVER (Route: 251)
Num:57022600000000x
Open: no restriction [A]
Built: 1991, 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): 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: 132.2 m = 433.7 ft
Main Spans: 3 at 49.7 m = 163.1 ft
Approach Spans: 0
Skew: 46
Width, Roadway: 9.8 m = 32.2 ft (2 Lanes) and Out-To-Out: 10.7 m = 35.1 ft for a 9.8 m = 32.2 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: McLean County [113], Illinois [17]
Owned by State Highway Agency [01], DOT District: 5
5.5 M S OF US 24

Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 59.6 metric ton = 65.6 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 36 metric ton = 39.6 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])

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 desirable criteria [8]
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 1999 [1299] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 2850 (2019) and Trucks: 9%
Future ADT: 2402 (In 2032 )