US Bridges

Il 158 SB over Trail NSRR Metrolink RD

Fair

St. Clair County, Illinois · 0.5 MI W of Scott Afb · Structure no. 082021000000000

Built
1972
53 years old, rebuilt 2001
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
204 ft
3 main spans
Daily traffic
9,150
2023 count
Owner
State
State Highway Agency

About this bridge

Il 158 SB over Trail NSRR Metrolink RD is a steel stringer/multi-beam or girder carrying Il 158 SB over Trail NSRR Metrolink RD in St. Clair County, Illinois. It was built in 1972 and reconstructed in 2001, so it is 53 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 6 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 9,150 vehicles a day, roughly 3% of them trucks, projected to reach 3,813 by 2046. The structure is 204 ft (62.1 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIl 158 SB
CrossesTrail NSRR Metrolink RD
Location0.5 MI W of Scott Afb
RouteState Highway 158
Coordinates38.53405, -89.88379
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating40 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length204 ft (62.1 m)
Longest span82 ft (25 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,150 (2023)
Projected traffic3,813 by 2046
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Il 158 SB over Trail NSRR Metrolink RD built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2001.

What condition is Il 158 SB over Trail NSRR Metrolink RD 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 September 2024.

How much traffic does Il 158 SB over Trail NSRR Metrolink RD carry?

About 9,150 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Il 158 SB over Trail NSRR Metrolink RD?

The structure is 204 ft (62.1 m) long with a longest span of 82 ft (25 m) and a deck 42 ft wide.

Who owns Il 158 SB over Trail NSRR Metrolink RD?

It is owned by the State Highway Agency.