US Bridges

I-57(SB) over Phinney Branch

Fair

Champaign County, Illinois · SW of Champaign · Structure no. 010000500000000

Built
1963
62 years old, rebuilt 2002
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
116 ft
3 main spans
Daily traffic
12,900
2023 count
Owner
State
State Highway Agency

About this bridge

I-57(SB) over Phinney Branch is a steel continuous stringer/multi-beam or girder carrying I-57(SB) over Phinney Branch in Champaign County, Illinois. It was built in 1963 and reconstructed in 2002, so it is 62 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 12,900 vehicles a day, roughly 35% of them trucks, projected to reach 15,908 by 2046. The structure is 116 ft (35.3 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-57(SB)
CrossesPhinney Branch
LocationSW of Champaign
RouteInterstate 57
CountyChampaign County
StateIllinois
Coordinates40.08706, -88.30453
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating66 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length116 ft (35.3 m)
Longest span43 ft (13.1 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,900 (2023)
Projected traffic15,908 by 2046
Trucks35%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-57(SB) over Phinney Branch built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2002.

What condition is I-57(SB) over Phinney Branch 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 2024.

How much traffic does I-57(SB) over Phinney Branch carry?

About 12,900 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is I-57(SB) over Phinney Branch?

The structure is 116 ft (35.3 m) long with a longest span of 43 ft (13.1 m) and a deck 44 ft wide.

Who owns I-57(SB) over Phinney Branch?

It is owned by the State Highway Agency.