US Bridges

West Road over Trib of Six Mile Crk

Good

Jackson County, Illinois · Dowell West Corp Lim · Structure no. 039600900000000

Built
2003
22 years old
Condition
Good
inspected December 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Road over Trib of Six Mile Crk is a prestressed concrete box beam or girders - multiple carrying West Road over Trib of Six Mile Crk in Jackson County, Illinois. It was built in 2003, so it is 22 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 500 vehicles a day, roughly 26% of them trucks, projected to reach 303 by 2046. The structure is 52 ft (15.7 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWest Road
CrossesTrib of Six Mile Crk
LocationDowell West Corp Lim
RouteCity Street 0
Coordinates37.93629, -89.24336
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 protection8 Very GoodNo problems noted.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.8 US tons
Inventory rating42.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length52 ft (15.7 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic303 by 2046
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 West Road over Trib of Six Mile Crk built?

It was built in 2003, making it 22 years old in 2025.

What condition is West Road over Trib of Six Mile Crk 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 December 2021.

How much traffic does West Road over Trib of Six Mile Crk carry?

About 500 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is West Road over Trib of Six Mile Crk?

The structure is 52 ft (15.7 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns West Road over Trib of Six Mile Crk?

It is owned by the City or Municipal Highway Agency.