Structure 34602800000000 · Hancock County, IL

4th Street over Unnamed Creek

Carries 4th Street over Unnamed Creek, 0.06 E Il 9.

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
24 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 24 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.

Built201016 years old
Length24.3 ft7.4 m
Daily traffic150counted 2023
Last inspectedMarch 2022every 48 months

Location

StateIllinois
CountyHancock
Location0.06 E Il 9
Carries4th Street
CrossesUnnamed Creek
Coordinates40.63591, -91.16608

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length24.3 ft (7.4 m)
Max Span11.2 ft (3.4 m)
Deck Width45.6 ft (13.9 m)
Deck Area102.9 sq m
Main Spans2
Year Built2010

Traffic

Avg Daily Traffic150 (2023)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number034602800000000

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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