US Bridges

Ch 9 (fas 547) over Rock Creek

Fair

De Witt County, Illinois · 3 MI E Waynesville · Structure no. 020500400000000

Built
1938
87 years old
Condition
Fair
inspected May 2022
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
325
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 9 (fas 547) over Rock Creek is a concrete culvert carrying Ch 9 (fas 547) over Rock Creek in De Witt County, Illinois. It was built in 1938, so it is 87 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 325 vehicles a day, roughly 15% of them trucks, projected to reach 328 by 2046. The structure is 36 ft (11 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCh 9 (fas 547)
CrossesRock Creek
Location3 MI E Waynesville
RouteCounty Highway 0
CountyDe Witt County
StateIllinois
Coordinates40.23231, -89.06806
Functional classRural Major 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2022
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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating37.5 US tons
Inventory rating22.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length36 ft (11 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2022)
Projected traffic328 by 2046
Trucks15%
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 9 (fas 547) over Rock Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is Ch 9 (fas 547) over Rock 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 May 2022.

How much traffic does Ch 9 (fas 547) over Rock Creek carry?

About 325 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Ch 9 (fas 547) over Rock Creek?

The structure is 36 ft (11 m) long with a longest span of 11 ft (3.4 m).

Who owns Ch 9 (fas 547) over Rock Creek?

It is owned by the County Highway Agency.