US Bridges

Ill 106 over Trib to Sandy Creek

Fair

Greene County, Illinois · 0.78 S of CO Line · Structure no. 031200500000000

Built
1938
87 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,350
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 106 over Trib to Sandy Creek is a concrete continuous culvert carrying Ill 106 over Trib to Sandy Creek in Greene County, Illinois. It was built in 1938, so it is 87 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 6 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 13% of them trucks, projected to reach 1,111 by 2046. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 72.1 mi (116 km).

CarriesIll 106
CrossesTrib to Sandy Creek
Location0.78 S of CO Line
RouteState Highway 106
Coordinates39.51164, -90.41654
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating89.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2023)
Projected traffic1,111 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed72.1 mi (116 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 Trib to Sandy Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is Ill 106 over Trib to Sandy Creek 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 February 2024.

How much traffic does Ill 106 over Trib to Sandy Creek carry?

About 1,350 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Ill 106 over Trib to Sandy Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Ill 106 over Trib to Sandy Creek?

It is owned by the State Highway Agency.