US Bridges

TR-117 over Big Creek

Good

Crawford County, Illinois · 3 MI N Stoy · Structure no. 017373900000000

Built
1985
40 years old
Condition
Good
inspected April 2022
Type
Slab
Concrete Continuous
Length
105 ft
3 main spans
Daily traffic
250
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR-117 over Big Creek is a concrete continuous slab carrying TR-117 over Big Creek in Crawford County, Illinois. It was built in 1985, so it is 40 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 250 vehicles a day, roughly 5% of them trucks, projected to reach 253 by 2046. The structure is 105 ft (32 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesTR-117
CrossesBig Creek
Location3 MI N Stoy
RouteCounty Highway 0
CountyCrawford County
StateIllinois
Coordinates39.04905, -87.82618
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length105 ft (32 m)
Longest span38 ft (11.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic253 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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-117 over Big Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is TR-117 over Big Creek 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 April 2022.

How much traffic does TR-117 over Big Creek carry?

About 250 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is TR-117 over Big Creek?

The structure is 105 ft (32 m) long with a longest span of 38 ft (11.6 m) and a deck 24 ft wide.

Who owns TR-117 over Big Creek?

It is owned by the Town or Township Highway Agency.