US Bridges

Ch 18 over Gum Branch

Good

Wayne County, Illinois · 0.3 MI W Sam Dale Lk · Structure no. 096341600000000

Built
2000
25 years old
Condition
Good
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
125
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 18 over Gum Branch is a prestressed concrete box beam or girders - multiple carrying Ch 18 over Gum Branch in Wayne County, Illinois. It was built in 2000, so it is 25 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 125 vehicles a day, roughly 18% of them trucks, projected to reach 128 by 2046. The structure is 72 ft (21.9 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCh 18
CrossesGum Branch
Location0.3 MI W Sam Dale Lk
RouteCounty Highway 0
Coordinates38.5491, -88.60666
Functional classRural Minor Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span67 ft (20.4 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2022)
Projected traffic128 by 2046
Trucks18%
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

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 18 over Gum Branch built?

It was built in 2000, making it 25 years old in 2025.

What condition is Ch 18 over Gum Branch 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 Ch 18 over Gum Branch carry?

About 125 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Ch 18 over Gum Branch?

The structure is 72 ft (21.9 m) long with a longest span of 67 ft (20.4 m) and a deck 27 ft wide.

Who owns Ch 18 over Gum Branch?

It is owned by the County Highway Agency.