US Bridges

Ill 123 over Clary Creek

Fair

Menard County, Illinois · 1 MI E Tallula · Structure no. 065200500000000

Built
1994
31 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
1,250
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 123 over Clary Creek is a concrete culvert carrying Ill 123 over Clary Creek in Menard County, Illinois. It was built in 1994, so it is 31 years old, younger 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 1,250 vehicles a day, roughly 16% of them trucks, projected to reach 1,313 by 2046. The structure is 33 ft (10 m) long. If it were closed, the detour would be 8.7 mi (14 km).

CarriesIll 123
CrossesClary Creek
Location1 MI E Tallula
RouteState Highway 123
Coordinates39.94522, -89.90777
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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length33 ft (10 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 traffic1,250 (2023)
Projected traffic1,313 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 123 over Clary Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Ill 123 over Clary 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 August 2023.

How much traffic does Ill 123 over Clary Creek carry?

About 1,250 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Ill 123 over Clary Creek?

The structure is 33 ft (10 m) long with a longest span of 10 ft (3 m).

Who owns Ill 123 over Clary Creek?

It is owned by the State Highway Agency.