US Bridges

TR 9 Airport Road over Saratoga Creek

Good

Grundy County, Illinois · 0.32 MI W Middle RD · Structure no. 032378100000000

Built
1984
41 years old
Condition
Good
inspected October 2024
Type
Culvert
Steel
Length
29 ft
3 main spans
Daily traffic
125
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 9 Airport Road over Saratoga Creek is a steel culvert carrying TR 9 Airport 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 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 125 vehicles a day, roughly 19% of them trucks, projected to reach 150 by 2046. The structure is 29 ft (8.7 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesTR 9 Airport Road
CrossesSaratoga Creek
Location0.32 MI W Middle RD
RouteCounty Highway 0
CountyGrundy County
StateIllinois
Coordinates41.42966, -88.44867
Functional classRural Minor 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 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 evaluation7: Better than present minimum criteria
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 rating98.2 US tons
Inventory rating61.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length29 ft (8.7 m)
Longest span7 ft (2.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2024)
Projected traffic150 by 2046
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 9 Airport Road over Saratoga Creek built?

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

What condition is TR 9 Airport 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 9 Airport Road over Saratoga Creek carry?

About 125 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is TR 9 Airport Road over Saratoga Creek?

The structure is 29 ft (8.7 m) long with a longest span of 7 ft (2.2 m) and a deck 24 ft wide.

Who owns TR 9 Airport Road over Saratoga Creek?

It is owned by the Town or Township Highway Agency.