US Bridges

FAS 648(CH 16) over Lake Fork

Fair

Shelby County, Illinois · 4 MI W Yantisville · Structure no. 087500800000000

Built
1939
86 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
66 ft
5 main spans
Daily traffic
325
2024 count
Owner
County
County Highway Agency

About this bridge

FAS 648(CH 16) over Lake Fork is a concrete culvert carrying FAS 648(CH 16) over Lake Fork in Shelby County, Illinois. It was built in 1939, so it is 86 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 325 vehicles a day, roughly 8% of them trucks, projected to reach 379 by 2046. The structure is 66 ft (20.2 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFAS 648(CH 16)
CrossesLake Fork
Location4 MI W Yantisville
RouteCounty Highway 0
CountyShelby County
StateIllinois
Coordinates39.53261, -88.95633
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length66 ft (20.2 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2024)
Projected traffic379 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 648(CH 16) over Lake Fork built?

It was built in 1939, making it 86 years old in 2025.

What condition is FAS 648(CH 16) over Lake Fork 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 April 2023.

How much traffic does FAS 648(CH 16) over Lake Fork carry?

About 325 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is FAS 648(CH 16) over Lake Fork?

The structure is 66 ft (20.2 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns FAS 648(CH 16) over Lake Fork?

It is owned by the County Highway Agency.