US Bridges

SBI70/IL70 Trask B over Drainage Ditch

Good

Winnebago County, Illinois · .2 MI E Meridian RD · Structure no. 101203600000000

Built
1991
34 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
4,600
2023 count
Owner
State
State Highway Agency

About this bridge

SBI70/IL70 Trask B over Drainage Ditch is a concrete culvert carrying SBI70/IL70 Trask B over Drainage Ditch in Winnebago County, Illinois. It was built in 1991, so it is 34 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 4,600 vehicles a day, roughly 2% of them trucks, projected to reach 4,596 by 2046. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesSBI70/IL70 Trask B
CrossesDrainage Ditch
Location.2 MI E Meridian RD
RouteState Highway 70
CountyWinnebago County
StateIllinois
Coordinates42.33096, -89.17061
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2023)
Projected traffic4,596 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 SBI70/IL70 Trask B over Drainage Ditch built?

It was built in 1991, making it 34 years old in 2025.

What condition is SBI70/IL70 Trask B over Drainage 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 June 2024.

How much traffic does SBI70/IL70 Trask B over Drainage Ditch carry?

About 4,600 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is SBI70/IL70 Trask B over Drainage Ditch?

The structure is 30 ft (9.1 m) long with a longest span of 10 ft (3 m).

Who owns SBI70/IL70 Trask B over Drainage Ditch?

It is owned by the State Highway Agency.