US Bridges

Ch 40 over Richland Creek

Poor

Shelby County, Illinois · 3.0 SE of Cowden · Structure no. 087304100000000

Built
1923
102 years old
Condition
Poor
inspected February 2024
Type
Truss - Thru
Steel
Length
63 ft
1 main span
Daily traffic
150
2024 count
Owner
County
County Highway Agency

About this bridge

Ch 40 over Richland Creek is a steel truss - thru carrying Ch 40 over Richland Creek in Shelby County, Illinois. It was built in 1923, so it is 102 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 150 vehicles a day, roughly 4% of them trucks, projected to reach 152 by 2046. The structure is 63 ft (19.2 m) long and 18 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCh 40
CrossesRichland Creek
Location3.0 SE of Cowden
RouteCounty Highway 0
Coordinates39.23601, -88.7871
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating34 US tons
Inventory rating20.4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length63 ft (19.2 m)
Longest span60 ft (18.4 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic152 by 2046
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$442,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ch 40 over Richland Creek built?

It was built in 1923, making it 102 years old in 2025.

What condition is Ch 40 over Richland Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Ch 40 over Richland Creek carry?

About 150 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Ch 40 over Richland Creek?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.4 m) and a deck 18 ft wide.

Who owns Ch 40 over Richland Creek?

It is owned by the County Highway Agency.