US Bridges

I-55/70;/64 over Csxrr NSRR Trrarr

Poor

St. Clair County, Illinois · E. St. Louis · Structure no. 082001700000000

Built
1959
66 years old, rebuilt 1988
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,615 ft
19 main spans
Daily traffic
66,500
2024 count
Owner
State
State Highway Agency

About this bridge

I-55/70;/64 over Csxrr NSRR Trrarr is a steel continuous stringer/multi-beam or girder carrying I-55/70;/64 over Csxrr NSRR Trrarr in St. Clair County, Illinois. It was built in 1959 and reconstructed in 1988, so it is 66 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 66,500 vehicles a day, roughly 18% of them trucks, projected to reach 67,973 by 2046. The structure is 1,615 ft (492.4 m) long and 116 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI-55/70;/64
CrossesCsxrr NSRR Trrarr
LocationE. St. Louis
RouteInterstate 55
CountySt. Clair County
StateIllinois
Coordinates38.63658, -90.13717
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans19
Design loadHS 20
Structure length1,615 ft (492.4 m)
Longest span132 ft (40.2 m)
Deck width116 ft (35.4 m)
Roadway width110 ft (33.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66,500 (2024)
Projected traffic67,973 by 2046
Trucks18%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-55/70;/64 over Csxrr NSRR Trrarr built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1988.

What condition is I-55/70;/64 over Csxrr NSRR Trrarr in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does I-55/70;/64 over Csxrr NSRR Trrarr carry?

About 66,500 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is I-55/70;/64 over Csxrr NSRR Trrarr?

The structure is 1,615 ft (492.4 m) long with a longest span of 132 ft (40.2 m) and a deck 116 ft wide.

Who owns I-55/70;/64 over Csxrr NSRR Trrarr?

It is owned by the State Highway Agency.