US Bridges

Stonebrooke DR over Trib to Dunlap Lake

Poor

Madison County, Illinois · 0.16 MI N Gerber RD · Structure no. 060670900000000

Built
1997
28 years old
Condition
Poor
inspected January 2023
Type
Culvert
Steel
Length
24 ft
3 main spans
Daily traffic
250
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stonebrooke DR over Trib to Dunlap Lake is a steel culvert carrying Stonebrooke DR over Trib to Dunlap Lake in Madison County, Illinois. It was built in 1997, so it is 28 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 250 vehicles a day, roughly 4% of them trucks, projected to reach 268 by 2046. The structure is 24 ft (7.4 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesStonebrooke DR
CrossesTrib to Dunlap Lake
Location0.16 MI N Gerber RD
RouteCity Street 0
CountyMadison County
StateIllinois
Coordinates38.79053, -89.93626
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating98.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length24 ft (7.4 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2021)
Projected traffic268 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Stonebrooke DR over Trib to Dunlap Lake built?

It was built in 1997, making it 28 years old in 2025.

What condition is Stonebrooke DR over Trib to Dunlap Lake in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2023.

How much traffic does Stonebrooke DR over Trib to Dunlap Lake carry?

About 250 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Stonebrooke DR over Trib to Dunlap Lake?

The structure is 24 ft (7.4 m) long with a longest span of 7 ft (2.1 m).

Who owns Stonebrooke DR over Trib to Dunlap Lake?

It is owned by the City or Municipal Highway Agency.