US Bridges

US 12 20 45 NB over Santa Fe DR Et Al

Fair

Cook County, Illinois · 0.5 M S I-55 · Structure no. 016246700000000

Built
1975
50 years old, rebuilt 2022
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,745 ft
30 main spans
Daily traffic
64,200
2021 count
Owner
State
State Highway Agency

About this bridge

US 12 20 45 NB over Santa Fe DR Et Al is a steel continuous stringer/multi-beam or girder carrying US 12 20 45 NB over Santa Fe DR Et Al in Cook County, Illinois. It was built in 1975 and reconstructed in 2022, so it is 50 years old, older 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 2,745 ft (836.7 m) long and 42 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesUS 12 20 45 NB
CrossesSanta Fe DR Et Al
Location0.5 M S I-55
RouteU.S. Route 12
CountyCook County
StateIllinois
Coordinates41.75867, -87.86724
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
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating89 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans30
Design loadHS 20
Structure length2,745 ft (836.7 m)
Longest span290 ft (88.4 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2022.

What condition is US 12 20 45 NB 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 May 2024.

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

The structure is 2,745 ft (836.7 m) long with a longest span of 290 ft (88.4 m) and a deck 42 ft wide.

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

It is owned by the State Highway Agency.