US Bridges

TR-203 over Big Creek

Fair

Crawford County, Illinois · 2.5 MI SE Oblong · Structure no. 017373600000000

Built
1977
48 years old
Condition
Fair
inspected February 2023
Type
Channel Beam
Concrete
Length
77 ft
2 main spans
Daily traffic
100
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-203 over Big Creek is a concrete channel beam carrying TR-203 over Big Creek in Crawford County, Illinois. It was built in 1977, so it is 48 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 101 by 2046. The structure is 77 ft (23.5 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR-203
CrossesBig Creek
Location2.5 MI SE Oblong
RouteCounty Highway 0
CountyCrawford County
StateIllinois
Coordinates38.96021, -87.88139
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.2 US tons
Inventory rating35.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span37 ft (11.3 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic101 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 TR-203 over Big Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is TR-203 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 February 2023.

How much traffic does TR-203 over Big Creek carry?

About 100 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is TR-203 over Big Creek?

The structure is 77 ft (23.5 m) long with a longest span of 37 ft (11.3 m) and a deck 26 ft wide.

Who owns TR-203 over Big Creek?

It is owned by the Town or Township Highway Agency.