US Bridges

Il 178 FAS 1279 over Clark Run

Good

LaSalle County, Illinois · 0.92 MI S of US 6 · Structure no. 050023800000000

Built
2007
18 years old
Condition
Good
inspected January 2021
Type
Frame
Concrete
Length
34 ft
1 main span
Daily traffic
3,550
2023 count
Owner
State
State Highway Agency

About this bridge

Il 178 FAS 1279 over Clark Run is a concrete frame carrying Il 178 FAS 1279 over Clark Run in LaSalle County, Illinois. It was built in 2007, so it is 18 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 3,550 vehicles a day, roughly 17% of them trucks, projected to reach 3,434 by 2046. The structure is 34 ft (10.5 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIl 178 FAS 1279
CrossesClark Run
Location0.92 MI S of US 6
RouteState Highway 178
CountyLaSalle County
StateIllinois
Coordinates41.34766, -89.0116
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.5 m)
Longest span33 ft (10.2 m)
Deck width43 ft (13.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,550 (2023)
Projected traffic3,434 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 178 FAS 1279 over Clark Run built?

It was built in 2007, making it 18 years old in 2025.

What condition is Il 178 FAS 1279 over Clark Run 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 January 2021.

How much traffic does Il 178 FAS 1279 over Clark Run carry?

About 3,550 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Il 178 FAS 1279 over Clark Run?

The structure is 34 ft (10.5 m) long with a longest span of 33 ft (10.2 m) and a deck 43 ft wide.

Who owns Il 178 FAS 1279 over Clark Run?

It is owned by the State Highway Agency.