US Bridges

Ch 15(FAS 685) over Big Creek

Fair

Edgar County, Illinois · 4.6 MI S of Il 16 · Structure no. 023320900000000

Built
1958
67 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
150
2019 count
Owner
County
County Highway Agency

About this bridge

Ch 15(FAS 685) over Big Creek is a concrete continuous tee beam carrying Ch 15(FAS 685) over Big Creek in Edgar County, Illinois. It was built in 1958, so it is 67 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 1% of them trucks, projected to reach 152 by 2046. The structure is 125 ft (38 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCh 15(FAS 685)
CrossesBig Creek
Location4.6 MI S of Il 16
RouteCounty Highway 0
CountyEdgar County
StateIllinois
Coordinates39.53055, -87.74882
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length125 ft (38 m)
Longest span47 ft (14.4 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2019)
Projected traffic152 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Ch 15(FAS 685) over Big Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Ch 15(FAS 685) over Big Creek 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 November 2024.

How much traffic does Ch 15(FAS 685) over Big Creek carry?

About 150 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Ch 15(FAS 685) over Big Creek?

The structure is 125 ft (38 m) long with a longest span of 47 ft (14.4 m) and a deck 29 ft wide.

Who owns Ch 15(FAS 685) over Big Creek?

It is owned by the County Highway Agency.