US Bridges

Ch 10 over Sutphens Run

Fair

LaSalle County, Illinois · E.7th N.4510 · Structure no. 050353900000000

Built
1991
34 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
275
2020 count
Owner
County
County Highway Agency

About this bridge

Ch 10 over Sutphens Run is a prestressed concrete box beam or girders - multiple carrying Ch 10 over Sutphens Run in LaSalle 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 275 vehicles a day, roughly 9% of them trucks, projected to reach 278 by 2046. The structure is 52 ft (15.7 m) long and 28 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCh 10
CrossesSutphens Run
LocationE.7th N.4510
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.58434, -89.03444
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length52 ft (15.7 m)
Longest span49 ft (14.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2020)
Projected traffic278 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Ch 10 over Sutphens Run built?

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

What condition is Ch 10 over Sutphens Run in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Ch 10 over Sutphens Run carry?

About 275 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is Ch 10 over Sutphens Run?

The structure is 52 ft (15.7 m) long with a longest span of 49 ft (14.9 m) and a deck 28 ft wide.

Who owns Ch 10 over Sutphens Run?

It is owned by the County Highway Agency.