US Bridges

FAI 74 & Ramp G over Copper Slough

Good

Champaign County, Illinois · Northwest of Champaign · Structure no. 010204300000000

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
31,500
2023 count
Owner
State
State Highway Agency

About this bridge

FAI 74 & Ramp G over Copper Slough is a concrete culvert carrying FAI 74 & Ramp G over Copper Slough in Champaign County, Illinois. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 31,500 vehicles a day, roughly 25% of them trucks, projected to reach 45,000 by 2043. The structure is 36 ft (10.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFAI 74 & Ramp G
CrossesCopper Slough
LocationNorthwest of Champaign
RouteInterstate 74
CountyChampaign County
StateIllinois
Coordinates40.14204, -88.27909
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert9 ExcellentNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating89.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length36 ft (10.9 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,500 (2023)
Projected traffic45,000 by 2043
Trucks25%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAI 74 & Ramp G over Copper Slough built?

It was built in 2023, making it 2 years old in 2025.

What condition is FAI 74 & Ramp G over Copper Slough 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 November 2023.

How much traffic does FAI 74 & Ramp G over Copper Slough carry?

About 31,500 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is FAI 74 & Ramp G over Copper Slough?

The structure is 36 ft (10.9 m) long with a longest span of 10 ft (3.2 m).

Who owns FAI 74 & Ramp G over Copper Slough?

It is owned by the State Highway Agency.