US Bridges

Brooklyn RD over Green River Trib

Fair

Lee County, Illinois · 0.5 MI S of US Rt 30 · Structure no. 052310200000000

Built
1986
39 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
275
2022 count
Owner
County
County Highway Agency

About this bridge

Brooklyn RD over Green River Trib is a prestressed concrete box beam or girders - multiple carrying Brooklyn RD over Green River Trib in Lee County, Illinois. It was built in 1986, so it is 39 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 5 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 275 vehicles a day, roughly 10% of them trucks, projected to reach 379 by 2046. The structure is 52 ft (15.8 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesBrooklyn RD
CrossesGreen River Trib
Location0.5 MI S of US Rt 30
RouteCounty Highway 0
Coordinates41.75189, -89.15164
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating39.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span49 ft (14.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2022)
Projected traffic379 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Brooklyn RD over Green River Trib built?

It was built in 1986, making it 39 years old in 2025.

What condition is Brooklyn RD over Green River Trib 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 February 2025.

How much traffic does Brooklyn RD over Green River Trib carry?

About 275 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Brooklyn RD over Green River Trib?

The structure is 52 ft (15.8 m) long with a longest span of 49 ft (14.9 m) and a deck 28 ft wide.

Who owns Brooklyn RD over Green River Trib?

It is owned by the County Highway Agency.