US Bridges

Ill 138 over Sugar Creek

Fair

Macoupin County, Illinois · 1.0MI W I-55/138 Int · Structure no. 059201100000000

Built
1932
93 years old, rebuilt 1992
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
2,700
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 138 over Sugar Creek is a concrete culvert carrying Ill 138 over Sugar Creek in Macoupin County, Illinois. It was built in 1932 and reconstructed in 1992, so it is 93 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 2,700 vehicles a day, roughly 7% of them trucks, projected to reach 3,131 by 2046. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesIll 138
CrossesSugar Creek
Location1.0MI W I-55/138 Int
RouteState Highway 138
CountyMacoupin County
StateIllinois
Coordinates39.07887, -89.77194
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 alignment6: Equal to present minimum criteria
Operating rating64.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2023)
Projected traffic3,131 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 138 over Sugar Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1992.

What condition is Ill 138 over Sugar 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 June 2023.

How much traffic does Ill 138 over Sugar Creek carry?

About 2,700 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Ill 138 over Sugar Creek?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (3.9 m).

Who owns Ill 138 over Sugar Creek?

It is owned by the State Highway Agency.