US Bridges

Rock Island Road over Drainage Ditch

Fair

Lee County, Illinois · 0.2 M W Bollman RD · Structure no. 052508100000000

Built
1968
57 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
2,300
2022 count
Owner
County
County Highway Agency

About this bridge

Rock Island Road over Drainage Ditch is a concrete culvert carrying Rock Island Road over Drainage Ditch in Lee County, Illinois. It was built in 1968, so it is 57 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,300 vehicles a day, roughly 7% of them trucks, projected to reach 2,778 by 2046. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesRock Island Road
CrossesDrainage Ditch
Location0.2 M W Bollman RD
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.79096, -89.58343
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 15
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2022)
Projected traffic2,778 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rock Island Road over Drainage Ditch built?

It was built in 1968, making it 57 years old in 2025.

What condition is Rock Island Road over Drainage Ditch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does Rock Island Road over Drainage Ditch carry?

About 2,300 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Rock Island Road over Drainage Ditch?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns Rock Island Road over Drainage Ditch?

It is owned by the County Highway Agency.