Structure 57313000000000 · McLean County, IL

Fas 492 Ch 7 over Branch Mackinaw Rv

Carries Fas 492 Ch 7 over Branch Mackinaw Rv, 5.5 Mi S Anchor.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 23 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built198343 years old
Length22.6 ft6.9 m
Daily traffic775counted 2024
Last inspectedFebruary 2024every 48 months

Location

StateIllinois
CountyMcLean
Location5.5 Mi S Anchor
CarriesFas 492 Ch 7
CrossesBranch Mackinaw Rv
Coordinates40.48705, -88.53547

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length22.6 ft (6.9 m)
Max Span9.8 ft (3 m)
Deck Area46.2 sq m
Main Spans2
Year Built1983

Traffic

Avg Daily Traffic775 (2024)
Truck Traffic55%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number057313000000000

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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