US Bridges

TR 112 Middle Road over Saratoga Creek

Good

Grundy County, Illinois · 0.01 MI S Airport RD · Structure no. 032378600000000

Built
1986
39 years old
Condition
Good
inspected October 2024
Type
Culvert
Steel
Length
34 ft
4 main spans
Daily traffic
325
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 112 Middle Road over Saratoga Creek is a steel culvert carrying TR 112 Middle Road over Saratoga Creek in Grundy 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 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 325 vehicles a day, roughly 14% of them trucks, projected to reach 150 by 2046. The structure is 34 ft (10.4 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR 112 Middle Road
CrossesSaratoga Creek
Location0.01 MI S Airport RD
RouteCounty Highway 0
Coordinates41.42968, -88.44252
Functional classUrban Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating20.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length34 ft (10.4 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 traffic325 (2024)
Projected traffic150 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 112 Middle Road over Saratoga Creek built?

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

What condition is TR 112 Middle Road over Saratoga Creek 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 October 2024.

How much traffic does TR 112 Middle Road over Saratoga Creek carry?

About 325 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is TR 112 Middle Road over Saratoga Creek?

The structure is 34 ft (10.4 m) long with a longest span of 7 ft (2.1 m) and a deck 24 ft wide.

Who owns TR 112 Middle Road over Saratoga Creek?

It is owned by the Town or Township Highway Agency.