Structure 60600200000000 · Madison County, IL

Salisbury St/fau91 over Miss River

Carries Salisbury St/fau91 over Miss River, Venice.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
5,733 FT OVERALL1,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

5,733 ft end to end, longest span 517 ft: about 16 football fields, or 1.1 miles. 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 or the layout of the shorter spans, so those are drawn as typical for a through truss.

Built1910rebuilt 2005
Length5732.9 ft1747.4 m
Daily traffic14,300counted 2021
Last inspectedSeptember 2023every 24 months

Location

StateIllinois
CountyMadison
LocationVenice
CarriesSalisbury St/fau91
CrossesMiss River
Coordinates38.66511, -90.18257

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length5732.9 ft (1747.4 m)
Max Span517.4 ft (157.7 m)
Deck Width47.2 ft (14.4 m)
Deck Area25162.6 sq m
Main Spans3
Year Built1910 (reconstructed 2005)

Traffic

Avg Daily Traffic14,300 (2021)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number060600200000000

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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