SB I-155 over MACKINAW RIVER (Route: 155)
Num:90009200000000x
Open: no restriction [A]
Built: 1970, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 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: Other [9]

Bridge Dimensions
Length: 167.6 m = 549.9 ft
Main Spans: 6 at 42.7 m = 140.1 ft
Approach Spans: 0
Skew: 20
Width, Roadway: 13 m = 42.7 ft (2 Lanes) and Out-To-Out: 14 m = 45.9 ft for a 12.8 m = 42.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Tazewell County [179], Illinois [17]
Owned by State Highway Agency [01], DOT District: 4
1mi N JCT I-155 /122

Condition
Deck: Poor [4]
Superstructure: Poor [4]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 63.2 metric ton = 69.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 33 metric ton = 36.3 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: 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 the assessed or calculated scour condition. [8]
Inspections
Date: March 2020 [0320] and Frequency: 12

Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 7100 (2019) and Trucks: 19%
Future ADT: 6773 (In 2032 )

OLD ILL 121 over MACKINAW RIVER (Route: 0)
Num:90008700000000x
Open: no restriction [A]
Built: 1932, Reconstructed: 1971
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Prestressed concrete [5] Box beam or girders - Multiple [05]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 204.5 m = 671.0 ft
Main Spans: 1 at 53.3 m = 174.9 ft
Approach Spans: 9
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 7.3 m = 24.0 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
Unknown [00000]: Tazewell County [179], Illinois [17]
Owned by State Highway Agency [01], DOT District: 4
1mi N HOPEDALE JCT

Condition
Deck: Serious [3]
Superstructure: Serious [3]
Substructure: Fair [5]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 45 metric ton = 49.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 24.3 metric ton = 26.7 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])

Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 2020 [0620] and Frequency: 12

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 125 (2018) and Trucks: 3%
Future ADT: 81 (In 2032 )

NB I-155 over MACKINAW RIVER (Route: 155)
Num:90010000000000x
Open: no restriction [A]
Built: 1970, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 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: Other [9]

Bridge Dimensions
Length: 167.6 m = 549.9 ft
Main Spans: 6 at 42.7 m = 140.1 ft
Approach Spans: 0
Skew: 20
Width, Roadway: 11.7 m = 38.4 ft (2 Lanes) and Out-To-Out: 12.8 m = 42.0 ft for a 12.8 m = 42.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Tazewell County [179], Illinois [17]
Owned by State Highway Agency [01], DOT District: 4
1mi N JCT I-155 /122

Condition
Deck: Poor [4]
Superstructure: Serious [3]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 65.4 metric ton = 71.9 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 34.3 metric ton = 37.7 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])

Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Equal to present minimum criteria [6]
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: March 2020 [0320] and Frequency: 12

Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 7100 (2019) and Trucks: 19%
Future ADT: 6773 (In 2032 )