US Bridges

FAS 174/CH 9 over Sutphens Run

Fair

LaSalle County, Illinois · E 12th N 4400 · Structure no. 050300200000000

Built
1955
70 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
53 ft
2 main spans
Daily traffic
450
2020 count
Owner
County
County Highway Agency

About this bridge

FAS 174/CH 9 over Sutphens Run is a concrete slab carrying FAS 174/CH 9 over Sutphens Run in LaSalle County, Illinois. It was built in 1955, so it is 70 years old, older 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 450 vehicles a day, roughly 16% of them trucks, projected to reach 455 by 2046. The structure is 53 ft (16.2 m) long and 28 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesFAS 174/CH 9
CrossesSutphens Run
LocationE 12th N 4400
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.57001, -88.93754
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length53 ft (16.2 m)
Longest span26 ft (7.9 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2020)
Projected traffic455 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 FAS 174/CH 9 over Sutphens Run built?

It was built in 1955, making it 70 years old in 2025.

What condition is FAS 174/CH 9 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 2024.

How much traffic does FAS 174/CH 9 over Sutphens Run carry?

About 450 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is FAS 174/CH 9 over Sutphens Run?

The structure is 53 ft (16.2 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns FAS 174/CH 9 over Sutphens Run?

It is owned by the County Highway Agency.