IS 270 E over MISSISSIPPI RVR (Route: 270)
Num:643x
Open: no restriction [A]
Built: 1964, Reconstructed: N/A [0000]
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] Girder and floorbeam system [03]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Other [9]

Bridge Dimensions
Length: 1649.3 m = 5411.4 ft
Main Spans: 29 at 73.9 m = 242.5 ft
Approach Spans: 14
Skew: 5
Width, Roadway: 17.7 m = 58.1 ft (4 Lanes) and Out-To-Out: 19.1 m = 62.7 ft for a 21.9 m = 71.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 16.4 m = 53.8 ft

Location
St. Louis [65000]: St. Louis city [510], Missouri [29]
Owned by State Highway Agency [01], DOT District: 5
S 36 T 47 N R 7 E

Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 54 metric ton = 59.4 tons (Load Factor(LF) [1])
Inventory: 32.4 metric ton = 35.6 tons (Load Factor(LF) [1])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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 assessed or calculated scour condition. [5]
Inspections
Date: June 1999 [699] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 4.3 km = 2.7 mi
Traffic
ADT: 59908 (2019) and Trucks: 18%
Future ADT: 74885 (In 2039 )

FAI 270 over MISSISSIPPI RIVER (Route: 270)
Num:60003500000000x
Open: no restriction [A]
Built: 1966, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Girder and floorbeam system [03]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Other [9]

Bridge Dimensions
Length: 1649.3 m = 5411.4 ft
Main Spans: 21 at 73.9 m = 242.5 ft
Approach Spans: 22
Skew: 5
Width, Roadway: 16.5 m = 54.1 ft (4 Lanes) and Out-To-Out: 19.1 m = 62.7 ft for a 21.9 m = 71.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 7.6 m = 24.9 ft

Location
Unknown [00000]: Madison County [119], Illinois [17]
Owned by State Highway Agency [01], DOT District: 8
N. OF GRANITE CITY

Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 47.6 metric ton = 52.4 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 25.9 metric ton = 28.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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 assessed or calculated scour condition. [5]
Inspections
Date: June 1999 [699] and Frequency: 24

Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 6.8 km = 4.2 mi
Traffic
ADT: 44600 (2019) and Trucks: 20%
Future ADT: 57240 (In 2032 )