US Bridges

I-39/US 51 NB over W Br Sugar Creek

Fair

McLean County, Illinois · S of I-55/I-39 Jct. · Structure no. 057201900000000

Built
1988
37 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
6,750
2023 count
Owner
State
State Highway Agency

About this bridge

I-39/US 51 NB over W Br Sugar Creek is a concrete continuous culvert carrying I-39/US 51 NB over W Br Sugar Creek in McLean County, Illinois. It was built in 1988, so it is 37 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 6,750 vehicles a day, roughly 46% of them trucks, projected to reach 6,969 by 2046. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-39/US 51 NB
CrossesW Br Sugar Creek
LocationS of I-55/I-39 Jct.
RouteInterstate 39
CountyMcLean County
StateIllinois
Coordinates40.53543, -89.00915
Functional classUrban Principal Arterial - Interstate

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating69.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.6 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,750 (2023)
Projected traffic6,969 by 2046
Trucks46%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-39/US 51 NB over W Br Sugar Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is I-39/US 51 NB over W Br 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 April 2023.

How much traffic does I-39/US 51 NB over W Br Sugar Creek carry?

About 6,750 vehicles per day (2023 count), of which roughly 46% are trucks.

How long is I-39/US 51 NB over W Br Sugar Creek?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3.2 m).

Who owns I-39/US 51 NB over W Br Sugar Creek?

It is owned by the State Highway Agency.