US Bridges

Il 78 over Drainage

Good

Jo Daviess County, Illinois · .69MI SE E Loran RD · Structure no. 043108200000000

Built
2009
16 years old
Condition
Good
inspected December 2021
Type
Culvert
Concrete
Length
25 ft
4 main spans
Daily traffic
600
2023 count
Owner
State
State Highway Agency

About this bridge

Il 78 over Drainage is a concrete culvert carrying Il 78 over Drainage in Jo Daviess County, Illinois. It was built in 2009, so it is 16 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 600 vehicles a day, roughly 13% of them trucks, projected to reach 556 by 2046. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesIl 78
CrossesDrainage
Location.69MI SE E Loran RD
RouteState Highway 78
Coordinates42.20881, -90.0145
Functional classRural Major Collector

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.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than 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 spans4
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span3 ft (0.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2023)
Projected traffic556 by 2046
Trucks13%
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

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 Il 78 over Drainage built?

It was built in 2009, making it 16 years old in 2025.

What condition is Il 78 over Drainage 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 December 2021.

How much traffic does Il 78 over Drainage carry?

About 600 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Il 78 over Drainage?

The structure is 25 ft (7.7 m) long with a longest span of 3 ft (0.9 m).

Who owns Il 78 over Drainage?

It is owned by the State Highway Agency.