US Bridges

Ch 23 over Trib Macoupin Creek

Fair

Montgomery County, Illinois · 4 MI SW Waggoner · Structure no. 068327200000000

Built
1984
41 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
75
2020 count
Owner
County
County Highway Agency

About this bridge

Ch 23 over Trib Macoupin Creek is a prestressed concrete box beam or girders - multiple carrying Ch 23 over Trib Macoupin Creek in Montgomery County, Illinois. It was built in 1984, so it is 41 years old, younger 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 6 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 75 vehicles a day, projected to reach 76 by 2046. The structure is 55 ft (16.8 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCh 23
CrossesTrib Macoupin Creek
Location4 MI SW Waggoner
RouteCounty Highway 0
Coordinates39.33262, -89.69313
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span54 ft (16.5 m)
Deck width27 ft (8.3 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2020)
Projected traffic76 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 23 over Trib Macoupin Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Ch 23 over Trib Macoupin 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 November 2024.

How much traffic does Ch 23 over Trib Macoupin Creek carry?

About 75 vehicles per day (2020 count).

How long is Ch 23 over Trib Macoupin Creek?

The structure is 55 ft (16.8 m) long with a longest span of 54 ft (16.5 m) and a deck 27 ft wide.

Who owns Ch 23 over Trib Macoupin Creek?

It is owned by the County Highway Agency.