US Bridges

I-39/US 51 NB over Panther Creek

Fair

Woodford County, Illinois · 4.4 MI N of US 24 · Structure no. 102005300000000

Built
1989
36 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
165 ft
3 main spans
Daily traffic
8,100
2023 count
Owner
State
State Highway Agency

About this bridge

I-39/US 51 NB over Panther Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying I-39/US 51 NB over Panther Creek in Woodford County, Illinois. It was built in 1989, so it is 36 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 5 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 8,100 vehicles a day, roughly 41% of them trucks, projected to reach 9,040 by 2046. The structure is 165 ft (50.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-39/US 51 NB
CrossesPanther Creek
Location4.4 MI N of US 24
RouteInterstate 39
CountyWoodford County
StateIllinois
Coordinates40.80092, -89.03538
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length165 ft (50.3 m)
Longest span63 ft (19.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,100 (2023)
Projected traffic9,040 by 2046
Trucks41%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Panther Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is I-39/US 51 NB over Panther 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 2023.

How much traffic does I-39/US 51 NB over Panther Creek carry?

About 8,100 vehicles per day (2023 count), of which roughly 41% are trucks.

How long is I-39/US 51 NB over Panther Creek?

The structure is 165 ft (50.3 m) long with a longest span of 63 ft (19.1 m) and a deck 43 ft wide.

Who owns I-39/US 51 NB over Panther Creek?

It is owned by the State Highway Agency.