US Bridges

Gerber RD FAU 8894 over Trib to Dunlap Lake

Good

Madison County, Illinois · 75FT N East Lake Dr. · Structure no. 060670500000000

Built
2009
16 years old
Condition
Good
inspected January 2021
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
1,300
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Gerber RD FAU 8894 over Trib to Dunlap Lake is a concrete culvert carrying Gerber RD FAU 8894 over Trib to Dunlap Lake in Madison County, Illinois. It was built in 2009, so it is 16 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 1,300 vehicles a day, roughly 4% of them trucks, projected to reach 1,391 by 2046. The structure is 29 ft (8.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGerber RD FAU 8894
CrossesTrib to Dunlap Lake
Location75FT N East Lake Dr.
CountyMadison County
StateIllinois
Coordinates38.79161, -89.93314
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length29 ft (8.9 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2021)
Projected traffic1,391 by 2046
Trucks4%
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

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 Gerber RD FAU 8894 over Trib to Dunlap Lake built?

It was built in 2009, making it 16 years old in 2025.

What condition is Gerber RD FAU 8894 over Trib to Dunlap Lake 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 2021.

How much traffic does Gerber RD FAU 8894 over Trib to Dunlap Lake carry?

About 1,300 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Gerber RD FAU 8894 over Trib to Dunlap Lake?

The structure is 29 ft (8.9 m) long with a longest span of 9 ft (2.7 m).

Who owns Gerber RD FAU 8894 over Trib to Dunlap Lake?

It is owned by the City or Municipal Highway Agency.