US Bridges

I 39/US 51 over Unnamed Stream

Fair

Woodford County, Illinois · 1.25 MI S of US 24 · Structure no. 102201600000000

Built
1992
33 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete Continuous
Length
28 ft
3 main spans
Daily traffic
18,700
2023 count
Owner
State
State Highway Agency

About this bridge

I 39/US 51 over Unnamed Stream is a concrete continuous culvert carrying I 39/US 51 over Unnamed Stream in Woodford County, Illinois. It was built in 1992, so it is 33 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 18,700 vehicles a day, roughly 37% of them trucks, projected to reach 18,281 by 2046. The structure is 28 ft (8.4 m) long.

Location

Open in Google Maps
CarriesI 39/US 51
CrossesUnnamed Stream
Location1.25 MI S of US 24
RouteInterstate 39
CountyWoodford County
StateIllinois
Coordinates40.72156, -89.03401
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 rating85.3 US tons
Inventory rating51.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span8 ft (2.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,700 (2023)
Projected traffic18,281 by 2046
Trucks37%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 over Unnamed Stream built?

It was built in 1992, making it 33 years old in 2025.

What condition is I 39/US 51 over Unnamed Stream 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 over Unnamed Stream carry?

About 18,700 vehicles per day (2023 count), of which roughly 37% are trucks.

How long is I 39/US 51 over Unnamed Stream?

The structure is 28 ft (8.4 m) long with a longest span of 8 ft (2.5 m).

Who owns I 39/US 51 over Unnamed Stream?

It is owned by the State Highway Agency.