Structure 8991200000000 · Carroll County, IL

Big Cut RD over Bnsf Rr

Carries Big Cut RD over Bnsf Rr, 3 Mi SW Mt Carroll.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructure4/9 · Poor
Substructuresets the rating3/9 · Serious
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT194 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9Substructure 3/9 · sets the rating

194 ft end to end: about 3 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 through truss.

Built1924102 years old
Length193.9 ft59.1 m
Daily traffic50counted 2021
Last inspectedJune 2018every 24 months

Location

StateIllinois
CountyCarroll
Location3 Mi SW Mt Carroll
CarriesBig Cut RD
CrossesBnsf Rr
Coordinates42.05133, -90.03654

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length193.9 ft (59.1 m)
Max Span73.2 ft (22.3 m)
Deck Width14.1 ft (4.3 m)
Deck Area254.1 sq m
Main Spans1
Year Built1924

Traffic

Avg Daily Traffic50 (2021)
Truck Traffic8%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2018
Inspection FrequencyEvery 24 months
OwnerRailroad
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number008991200000000

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.

Nearby Bridges