US Bridges

US 12 20 45 SB over Santa Fe DR Et Al

Fair

Cook County, Illinois · 0.5 M S I-55 · Structure no. 016240700000000

Built
1980
45 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,737 ft
30 main spans
Daily traffic
64,200
2021 count
Owner
State
State Highway Agency

About this bridge

US 12 20 45 SB over Santa Fe DR Et Al is a steel continuous stringer/multi-beam or girder carrying US 12 20 45 SB over Santa Fe DR Et Al in Cook County, Illinois. It was built in 1980, so it is 45 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 64,200 vehicles a day, roughly 13% of them trucks, projected to reach 32,421 by 2046. The structure is 2,737 ft (834.2 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS 12 20 45 SB
CrossesSanta Fe DR Et Al
Location0.5 M S I-55
RouteU.S. Route 12
Coordinates41.75888, -87.86728
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans30
Design loadHS 20
Structure length2,737 ft (834.2 m)
Longest span108 ft (32.9 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic64,200 (2021)
Projected traffic32,421 by 2046
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$23.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 12 20 45 SB over Santa Fe DR Et Al built?

It was built in 1980, making it 45 years old in 2025.

What condition is US 12 20 45 SB over Santa Fe DR Et Al in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does US 12 20 45 SB over Santa Fe DR Et Al carry?

About 64,200 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is US 12 20 45 SB over Santa Fe DR Et Al?

The structure is 2,737 ft (834.2 m) long with a longest span of 108 ft (32.9 m) and a deck 43 ft wide.

Who owns US 12 20 45 SB over Santa Fe DR Et Al?

It is owned by the State Highway Agency.