US Bridges

John ST (fau 7128) over Copper Slough

Poor

Champaign County, Illinois · .25 MI W Duncan RD · Structure no. 010620300000000

Built
1967
58 years old, rebuilt 2004
Condition
Poor
inspected September 2024
Type
Channel Beam
Concrete
Length
73 ft
3 main spans
Daily traffic
2,200
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

John ST (fau 7128) over Copper Slough is a concrete channel beam carrying John ST (fau 7128) over Copper Slough in Champaign County, Illinois. It was built in 1967 and reconstructed in 2004, so it is 58 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,200 vehicles a day, roughly 4% of them trucks, projected to reach 2,222 by 2046. The structure is 73 ft (22.2 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesJohn ST (fau 7128)
CrossesCopper Slough
Location.25 MI W Duncan RD
Coordinates40.10936, -88.29663
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating66.8 US tons
Inventory rating40 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length73 ft (22.2 m)
Longest span23 ft (7.1 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2021)
Projected traffic2,222 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$320,000
NavigationNo navigation control on waterway

Frequently asked questions

When was John ST (fau 7128) over Copper Slough built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2004.

What condition is John ST (fau 7128) over Copper Slough in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does John ST (fau 7128) over Copper Slough carry?

About 2,200 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is John ST (fau 7128) over Copper Slough?

The structure is 73 ft (22.2 m) long with a longest span of 23 ft (7.1 m) and a deck 33 ft wide.

Who owns John ST (fau 7128) over Copper Slough?

It is owned by the City or Municipal Highway Agency.