US Bridges

Crego Road over Br of Somonauk Creek

Good

DeKalb County, Illinois · 1 MI E/Il 23 N.Us 30 · Structure no. 019202400000000

Built
2023
2 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
20 ft
2 main spans
Daily traffic
50
2021 count
Owner
State
State Highway Agency

About this bridge

Crego Road over Br of Somonauk Creek is a concrete culvert carrying Crego Road over Br of Somonauk Creek in DeKalb County, Illinois. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 2% of them trucks, projected to reach 56 by 2046. The structure is 20 ft (6.2 m) long and 52 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCrego Road
CrossesBr of Somonauk Creek
Location1 MI E/Il 23 N.Us 30
RouteCounty Highway 0
CountyDeKalb County
StateIllinois
Coordinates41.76949, -88.73466
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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating49.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length20 ft (6.2 m)
Longest span10 ft (3 m)
Deck width52 ft (15.8 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic56 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Crego Road over Br of Somonauk Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Crego Road over Br of Somonauk Creek 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 July 2023.

How much traffic does Crego Road over Br of Somonauk Creek carry?

About 50 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Crego Road over Br of Somonauk Creek?

The structure is 20 ft (6.2 m) long with a longest span of 10 ft (3 m) and a deck 52 ft wide.

Who owns Crego Road over Br of Somonauk Creek?

It is owned by the State Highway Agency.