US Bridges

I 24 EB over TR 173 Bethlehem Ch

Good

Johnson County, Illinois · 7 MI S E of Vienna · Structure no. 044004900000000

Built
1971
54 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
107 ft
3 main spans
Daily traffic
10,250
2024 count
Owner
State
State Highway Agency

About this bridge

I 24 EB over TR 173 Bethlehem Ch is a steel continuous stringer/multi-beam or girder carrying I 24 EB over TR 173 Bethlehem Ch in Johnson 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,250 vehicles a day, roughly 41% of them trucks, projected to reach 11,025 by 2046. The structure is 107 ft (32.7 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 24 EB
CrossesTR 173 Bethlehem Ch
Location7 MI S E of Vienna
RouteInterstate 24
Coordinates37.37837, -88.81845
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 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 rating63.9 US tons
Inventory rating38.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length107 ft (32.7 m)
Longest span47 ft (14.2 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,250 (2024)
Projected traffic11,025 by 2046
Trucks41%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 24 EB over TR 173 Bethlehem Ch built?

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

What condition is I 24 EB over TR 173 Bethlehem Ch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does I 24 EB over TR 173 Bethlehem Ch carry?

About 10,250 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is I 24 EB over TR 173 Bethlehem Ch?

The structure is 107 ft (32.7 m) long with a longest span of 47 ft (14.2 m) and a deck 44 ft wide.

Who owns I 24 EB over TR 173 Bethlehem Ch?

It is owned by the State Highway Agency.