Structure 71506500000000 · Ogle County, IL

Columbine Road over Br Leaf River

Carries Columbine Road over Br Leaf River, 2.8 M NE Forreston.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

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

A culvert 25 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.

Built197650 years old
Length24.9 ft7.6 m
Daily traffic100counted 2022
Last inspectedJune 2024every 24 months

Location

StateIllinois
CountyOgle
Location2.8 M NE Forreston
CarriesColumbine Road
CrossesBr Leaf River
Coordinates42.15866, -89.54118

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length24.9 ft (7.6 m)
Max Span12.1 ft (3.7 m)
Deck Width37.7 ft (11.5 m)
Deck Area87.4 sq m
Main Spans2
Year Built1976

Traffic

Avg Daily Traffic100 (2022)
Truck Traffic45%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number071506500000000

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