Structure 75001200000000 · Pike County, IL

Il 107 over Middle Fork Mckee CR

Carries Il 107 over Middle Fork Mckee CR, .14m S 104.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT170 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 6/9

170 ft end to end, longest span 42 ft: 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 box-beam bridge.

Built1956rebuilt 2002
Length169.6 ft51.7 m
Daily traffic775counted 2023
Last inspectedMarch 2024every 12 months

Location

StateIllinois
CountyPike
Location.14m S 104
CarriesIl 107
CrossesMiddle Fork Mckee CR
Coordinates39.80627, -90.74537

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length169.6 ft (51.7 m)
Max Span42.0 ft (12.8 m)
Deck Width32.5 ft (9.9 m)
Deck Area511.8 sq m
Main Spans4
Year Built1956 (reconstructed 2002)

Traffic

Avg Daily Traffic775 (2023)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number075001200000000

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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