US Bridges

FAS 957 Big Bay over Interstate 24

Fair

Massac County, Illinois · 2 MI S of Johnson CO · Structure no. 064001600000000

Built
1971
54 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
261 ft
2 main spans
Daily traffic
550
2020 count
Owner
State
State Highway Agency

About this bridge

FAS 957 Big Bay over Interstate 24 is a steel continuous stringer/multi-beam or girder carrying FAS 957 Big Bay over Interstate 24 in Massac 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 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 550 vehicles a day, roughly 9% of them trucks, projected to reach 556 by 2046. The structure is 261 ft (79.5 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesFAS 957 Big Bay
CrossesInterstate 24
Location2 MI S of Johnson CO
RouteCounty Highway 0
CountyMassac County
StateIllinois
Coordinates37.30072, -88.75343
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 15
Structure length261 ft (79.5 m)
Longest span99 ft (30.1 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2020)
Projected traffic556 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

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 FAS 957 Big Bay over Interstate 24 built?

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

What condition is FAS 957 Big Bay over Interstate 24 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 FAS 957 Big Bay over Interstate 24 carry?

About 550 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is FAS 957 Big Bay over Interstate 24?

The structure is 261 ft (79.5 m) long with a longest span of 99 ft (30.1 m) and a deck 32 ft wide.

Who owns FAS 957 Big Bay over Interstate 24?

It is owned by the State Highway Agency.