US Bridges

Olcott Road over Unnamed Ditch

Good

McHenry County, Illinois · Olcott at Carmack · Structure no. 056321500000000

Built
2016
9 years old
Condition
Good
inspected February 2024
Type
Culvert
Steel
Length
22 ft
4 main spans
Daily traffic
125
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Olcott Road over Unnamed Ditch is a steel culvert carrying Olcott Road over Unnamed Ditch in McHenry County, Illinois. It was built in 2016, so it is 9 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 125 vehicles a day, roughly 25% of them trucks, projected to reach 150 by 2046. The structure is 22 ft (6.8 m) long.

CarriesOlcott Road
CrossesUnnamed Ditch
LocationOlcott at Carmack
RouteCounty Highway 0
Coordinates42.29939, -88.69108
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating32.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadHS 25 or greater
Structure length22 ft (6.8 m)
Longest span5 ft (1.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2021)
Projected traffic150 by 2046
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Olcott Road over Unnamed Ditch built?

It was built in 2016, making it 9 years old in 2025.

What condition is Olcott Road over Unnamed Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does Olcott Road over Unnamed Ditch carry?

About 125 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is Olcott Road over Unnamed Ditch?

The structure is 22 ft (6.8 m) long with a longest span of 5 ft (1.4 m).

Who owns Olcott Road over Unnamed Ditch?

It is owned by the Town or Township Highway Agency.