US Bridges

TR 369 over Cahokia CR

Good

Macoupin County, Illinois · 2 MI E Gillespie · Structure no. 059326200000000

Built
1978
47 years old
Condition
Good
inspected January 2023
Type
Channel Beam
Concrete
Length
109 ft
3 main spans
Daily traffic
150
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 369 over Cahokia CR is a concrete channel beam carrying TR 369 over Cahokia CR in Macoupin County, Illinois. It was built in 1978, so it is 47 years old, older 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 150 vehicles a day, roughly 7% of them trucks, projected to reach 152 by 2046. The structure is 109 ft (33.3 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTR 369
CrossesCahokia CR
Location2 MI E Gillespie
RouteCounty Highway 0
Coordinates39.13084, -89.75033
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating32.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length109 ft (33.3 m)
Longest span35 ft (10.7 m)
Deck width26 ft (8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic152 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 369 over Cahokia CR built?

It was built in 1978, making it 47 years old in 2025.

What condition is TR 369 over Cahokia CR 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 January 2023.

How much traffic does TR 369 over Cahokia CR carry?

About 150 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is TR 369 over Cahokia CR?

The structure is 109 ft (33.3 m) long with a longest span of 35 ft (10.7 m) and a deck 26 ft wide.

Who owns TR 369 over Cahokia CR?

It is owned by the Town or Township Highway Agency.