US Bridges

Old Monee RD over Thorn Creek

Fair

Will County, Illinois · .7MI N Exchange RD · Structure no. 099337900000000

Built
2008
17 years old
Condition
Fair
inspected July 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
1,100
2023 count
Owner
County
County Highway Agency

About this bridge

Old Monee RD over Thorn Creek is a steel stringer/multi-beam or girder carrying Old Monee RD over Thorn Creek in Will County, Illinois. It was built in 2008, so it is 17 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 1,100 vehicles a day, roughly 5% of them trucks, projected to reach 5,688 by 2046. The structure is 80 ft (24.3 m) long and 43 ft wide.

Location

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CarriesOld Monee RD
CrossesThorn Creek
Location.7MI N Exchange RD
CountyWill County
StateIllinois
Coordinates41.45634, -87.69966
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length80 ft (24.3 m)
Longest span76 ft (23.2 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic5,688 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Old Monee RD over Thorn Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Old Monee RD over Thorn 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 July 2022.

How much traffic does Old Monee RD over Thorn Creek carry?

About 1,100 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Old Monee RD over Thorn Creek?

The structure is 80 ft (24.3 m) long with a longest span of 76 ft (23.2 m) and a deck 43 ft wide.

Who owns Old Monee RD over Thorn Creek?

It is owned by the County Highway Agency.