Structure 69990400000000 · Morgan County, IL

Tr 137 over B&n Rr

Carries Tr 137 over B&n Rr, .5 M N Jville.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating3/9 · Serious
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT170 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 3/9 · sets the rating

170 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 bridge of this kind.

Built1900126 years old
Length169.9 ft51.8 m
Daily traffic50counted 2024
Last inspectedJuly 2023every 24 months

Location

StateIllinois
CountyMorgan
Location.5 M N Jville
CarriesTr 137
CrossesB&n Rr
Coordinates39.75984, -90.23434

Physical Characteristics

MaterialSteel
DesignOther
Total Length169.9 ft (51.8 m)
Max Span49.9 ft (15.2 m)
Deck Width18.0 ft (5.5 m)
Deck Area284.9 sq m
Main Spans1
Year Built1900

Traffic

Avg Daily Traffic50 (2024)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerRailroad
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number069990400000000

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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