US Bridges

TR 3B Minooka Road over Saratoga Creek

Fair

Grundy County, Illinois · 0.36 MI E Lisbon RD · Structure no. 032375600000000

Built
1984
41 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
27 ft
3 main spans
Daily traffic
350
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 3B Minooka Road over Saratoga Creek is a steel culvert carrying TR 3B Minooka Road over Saratoga Creek in Grundy 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 350 vehicles a day, roughly 28% of them trucks, projected to reach 360 by 2046. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesTR 3B Minooka Road
CrossesSaratoga Creek
Location0.36 MI E Lisbon RD
RouteCounty Highway 0
CountyGrundy County
StateIllinois
Coordinates41.44368, -88.47443
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
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 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 rating32.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span7 ft (2.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2024)
Projected traffic360 by 2046
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 TR 3B Minooka Road over Saratoga Creek built?

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

What condition is TR 3B Minooka Road over Saratoga 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 October 2024.

How much traffic does TR 3B Minooka Road over Saratoga Creek carry?

About 350 vehicles per day (2024 count), of which roughly 28% are trucks.

How long is TR 3B Minooka Road over Saratoga Creek?

The structure is 27 ft (8.2 m) long with a longest span of 7 ft (2.1 m) and a deck 24 ft wide.

Who owns TR 3B Minooka Road over Saratoga Creek?

It is owned by the Town or Township Highway Agency.