US Bridges

I-64 WB over NSRR

Poor

St. Clair County, Illinois · 0.3 MI E of Il 161 · Structure no. 082019500000000

Built
1971
54 years old
Condition
Poor
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
168 ft
3 main spans
Daily traffic
15,500
2023 count
Owner
State
State Highway Agency

About this bridge

I-64 WB over NSRR is a steel continuous stringer/multi-beam or girder carrying I-64 WB over NSRR in St. Clair County, Illinois. It was built in 1971, so it is 54 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 4 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 15,500 vehicles a day, roughly 31% of them trucks, projected to reach 15,807 by 2046. The structure is 168 ft (51.1 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-64 WB
CrossesNSRR
Location0.3 MI E of Il 161
RouteInterstate 64
CountySt. Clair County
StateIllinois
Coordinates38.53273, -89.72693
Functional classRural 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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length168 ft (51.1 m)
Longest span64 ft (19.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,500 (2023)
Projected traffic15,807 by 2046
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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-64 WB over NSRR built?

It was built in 1971, making it 54 years old in 2025.

What condition is I-64 WB over NSRR 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 February 2023.

How much traffic does I-64 WB over NSRR carry?

About 15,500 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is I-64 WB over NSRR?

The structure is 168 ft (51.1 m) long with a longest span of 64 ft (19.4 m) and a deck 43 ft wide.

Who owns I-64 WB over NSRR?

It is owned by the State Highway Agency.