US Bridges

I 39&US 51NB over Perry Rd-Fas 176

Fair

Lee County, Illinois · East Edge Steward · Structure no. 052004500000000

Built
1984
41 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
163 ft
1 main span
Daily traffic
9,750
2023 count
Owner
State
State Highway Agency

About this bridge

I 39&US 51NB over Perry Rd-Fas 176 is a steel stringer/multi-beam or girder carrying I 39&US 51NB over Perry Rd-Fas 176 in Lee County, Illinois. It was built in 1984, so it is 41 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 9,750 vehicles a day, roughly 39% of them trucks, projected to reach 9,949 by 2046. The structure is 163 ft (49.7 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 39&US 51NB
CrossesPerry Rd-Fas 176
LocationEast Edge Steward
RouteInterstate 39
CountyLee County
StateIllinois
Coordinates41.84833, -89.00995
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length163 ft (49.7 m)
Longest span114 ft (34.7 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,750 (2023)
Projected traffic9,949 by 2046
Trucks39%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 39&US 51NB over Perry Rd-Fas 176 built?

It was built in 1984, making it 41 years old in 2025.

What condition is I 39&US 51NB over Perry Rd-Fas 176 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 October 2023.

How much traffic does I 39&US 51NB over Perry Rd-Fas 176 carry?

About 9,750 vehicles per day (2023 count), of which roughly 39% are trucks.

How long is I 39&US 51NB over Perry Rd-Fas 176?

The structure is 163 ft (49.7 m) long with a longest span of 114 ft (34.7 m) and a deck 42 ft wide.

Who owns I 39&US 51NB over Perry Rd-Fas 176?

It is owned by the State Highway Agency.