US Bridges

North Greenmount R over Richland Creek

Good

St. Clair County, Illinois · 1.5 MI N Shiloh RD · Structure no. 082412100000000

Built
1987
38 years old, rebuilt 2002
Condition
Good
inspected March 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
162 ft
3 main spans
Daily traffic
19,200
2023 count
Owner
County
County Highway Agency

About this bridge

North Greenmount R over Richland Creek is a prestressed concrete box beam or girders - multiple carrying North Greenmount R over Richland Creek in St. Clair County, Illinois. It was built in 1987 and reconstructed in 2002, so it is 38 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 19,200 vehicles a day, roughly 5% of them trucks, projected to reach 18,382 by 2046. The structure is 162 ft (49.4 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNorth Greenmount R
CrossesRichland Creek
Location1.5 MI N Shiloh RD
CountySt. Clair County
StateIllinois
Coordinates38.56858, -89.92907
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating103.2 US tons
Inventory rating45 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span60 ft (18.3 m)
Deck width44 ft (13.5 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,200 (2023)
Projected traffic18,382 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$748,000
NavigationNo navigation control on waterway

Frequently asked questions

When was North Greenmount R over Richland Creek built?

It was built in 1987, making it 38 years old in 2025. It was reconstructed in 2002.

What condition is North Greenmount R over Richland 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 March 2022.

How much traffic does North Greenmount R over Richland Creek carry?

About 19,200 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is North Greenmount R over Richland Creek?

The structure is 162 ft (49.4 m) long with a longest span of 60 ft (18.3 m) and a deck 44 ft wide.

Who owns North Greenmount R over Richland Creek?

It is owned by the County Highway Agency.