Structure 69322100000000 · Morgan County, IL

Fas 611 over Indian Creek

Carries Fas 611 over Indian Creek, 2.5 Mi NE Concord.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT154 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

154 ft end to end, longest span 62 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.

Built199234 years old
Length153.9 ft46.9 m
Daily traffic150counted 2024
Last inspectedOctober 2021every 48 months

Location

StateIllinois
CountyMorgan
Location2.5 Mi NE Concord
CarriesFas 611
CrossesIndian Creek
Coordinates39.84206, -90.32443

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length153.9 ft (46.9 m)
Max Span62.0 ft (18.9 m)
Deck Width29.9 ft (9.1 m)
Deck Area426.8 sq m
Main Spans3
Year Built1992

Traffic

Avg Daily Traffic150 (2024)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number069322100000000

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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