Structure 52005300000000 · Lee County, IL

I 39 & US 51 NB over US 30

Carries I 39 & US 51 NB over US 30, 4 Mi N Of Paw Paw.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT176 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

176 ft end to end: about 2 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built198442 years old
Length175.9 ft53.6 m
Daily traffic9,550counted 2023
Last inspectedOctober 2023every 24 months

Location

StateIllinois
CountyLee
Location4 Mi N Of Paw Paw
CarriesI 39 & US 51 NB
CrossesUS 30
Coordinates41.76054, -89.00939

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length175.9 ft (53.6 m)
Max Span127.0 ft (38.7 m)
Deck Width42.0 ft (12.8 m)
Deck Area686.1 sq m
Main Spans1
Year Built1984

Traffic

Avg Daily Traffic9,550 (2023)
Truck Traffic41%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number052005300000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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