US Bridges

FAS 256 over Little Vermillion

Fair

LaSalle County, Illinois · N42nd E700th · Structure no. 050300700000000

Built
1972
53 years old
Condition
Fair
inspected August 2023
Type
Channel Beam
Concrete
Length
36 ft
1 main span
Daily traffic
150
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

FAS 256 over Little Vermillion is a concrete channel beam carrying FAS 256 over Little Vermillion in LaSalle County, Illinois. It was built in 1972, so it is 53 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 5 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 150 vehicles a day, roughly 15% of them trucks, projected to reach 152 by 2046. The structure is 36 ft (11 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesFAS 256
CrossesLittle Vermillion
LocationN42nd E700th
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.53986, -89.03331
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating41.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span35 ft (10.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic152 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 256 over Little Vermillion built?

It was built in 1972, making it 53 years old in 2025.

What condition is FAS 256 over Little Vermillion 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 August 2023.

How much traffic does FAS 256 over Little Vermillion carry?

About 150 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is FAS 256 over Little Vermillion?

The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 30 ft wide.

Who owns FAS 256 over Little Vermillion?

It is owned by the Town or Township Highway Agency.