US Bridges

Il 106 over The Sny

Fair

Pike County, Illinois · 3.7M W Il 96/HULL · Structure no. 075002400000000

Built
1930
95 years old, rebuilt 1965
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
92 ft
3 main spans
Daily traffic
1,350
2023 count
Owner
State
State Highway Agency

About this bridge

Il 106 over The Sny is a concrete continuous slab carrying Il 106 over The Sny in Pike County, Illinois. It was built in 1930 and reconstructed in 1965, so it is 95 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 1,350 vehicles a day, roughly 7% of them trucks, projected to reach 1,276 by 2046. The structure is 92 ft (27.9 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIl 106
CrossesThe Sny
Location3.7M W Il 96/HULL
RouteState Highway 106
CountyPike County
StateIllinois
Coordinates39.71241, -91.26443
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length92 ft (27.9 m)
Longest span33 ft (10.1 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2023)
Projected traffic1,276 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 106 over The Sny built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1965.

What condition is Il 106 over The Sny 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 October 2023.

How much traffic does Il 106 over The Sny carry?

About 1,350 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Il 106 over The Sny?

The structure is 92 ft (27.9 m) long with a longest span of 33 ft (10.1 m) and a deck 47 ft wide.

Who owns Il 106 over The Sny?

It is owned by the State Highway Agency.