US Bridges

FAU 6998(CH 20) over Lake Vermilion

Fair

Vermilion County, Illinois · .2 MI NW Danville · Structure no. 092017500000000

Built
1978
47 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
265 ft
3 main spans
Daily traffic
3,800
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 6998(CH 20) over Lake Vermilion is a steel continuous stringer/multi-beam or girder carrying FAU 6998(CH 20) over Lake Vermilion in Vermilion County, Illinois. It was built in 1978, so it is 47 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 3,800 vehicles a day, roughly 3% of them trucks, projected to reach 4,394 by 2046. The structure is 265 ft (80.8 m) long and 42 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesFAU 6998(CH 20)
CrossesLake Vermilion
Location.2 MI NW Danville
CountyVermilion County
StateIllinois
Coordinates40.16473, -87.64532
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.6 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length265 ft (80.8 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2023)
Projected traffic4,394 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 FAU 6998(CH 20) over Lake Vermilion built?

It was built in 1978, making it 47 years old in 2025.

What condition is FAU 6998(CH 20) over Lake Vermilion 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 July 2023.

How much traffic does FAU 6998(CH 20) over Lake Vermilion carry?

About 3,800 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is FAU 6998(CH 20) over Lake Vermilion?

The structure is 265 ft (80.8 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns FAU 6998(CH 20) over Lake Vermilion?

It is owned by the City or Municipal Highway Agency.