US Bridges

Harmon Road over Drainage Ditch

Fair

Lee County, Illinois · 0.5 M N of Harmon · Structure no. 052509200000000

Built
1965
60 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
450
2022 count
Owner
County
County Highway Agency

About this bridge

Harmon Road over Drainage Ditch is a concrete culvert carrying Harmon Road over Drainage Ditch in Lee County, Illinois. It was built in 1965, so it is 60 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 450 vehicles a day, roughly 10% of them trucks, projected to reach 657 by 2046. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesHarmon Road
CrossesDrainage Ditch
Location0.5 M N of Harmon
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.73003, -89.55447
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
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 alignment7: Better than present minimum criteria
Operating rating67.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 15
Structure length26 ft (7.9 m)
Longest span12 ft (3.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2022)
Projected traffic657 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Harmon Road over Drainage Ditch built?

It was built in 1965, making it 60 years old in 2025.

What condition is Harmon 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 2025.

How much traffic does Harmon Road over Drainage Ditch carry?

About 450 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Harmon Road over Drainage Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.8 m).

Who owns Harmon Road over Drainage Ditch?

It is owned by the County Highway Agency.