US Bridges

Ill 106 over Little Sandy Creek

Good

Scott County, Illinois · 2.0 MI S Alsey · Structure no. 086050200000000

Built
2001
24 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
88 ft
1 main span
Daily traffic
1,150
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 106 over Little Sandy Creek is a steel stringer/multi-beam or girder carrying Ill 106 over Little Sandy Creek in Scott County, Illinois. It was built in 2001, so it is 24 years old, younger 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 1,150 vehicles a day, roughly 11% of them trucks, projected to reach 1,313 by 2046. The structure is 88 ft (26.7 m) long and 35 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesIll 106
CrossesLittle Sandy Creek
Location2.0 MI S Alsey
RouteState Highway 106
Coordinates39.52338, -90.42546
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length88 ft (26.7 m)
Longest span85 ft (25.9 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2023)
Projected traffic1,313 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Ill 106 over Little Sandy Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Ill 106 over Little Sandy Creek 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 March 2024.

How much traffic does Ill 106 over Little Sandy Creek carry?

About 1,150 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Ill 106 over Little Sandy Creek?

The structure is 88 ft (26.7 m) long with a longest span of 85 ft (25.9 m) and a deck 35 ft wide.

Who owns Ill 106 over Little Sandy Creek?

It is owned by the State Highway Agency.