US Bridges

Stone Quarry RD over I 90

Fair

Boone County, Illinois · .5 MI S US 20 · Structure no. 004995600000000

Built
2013
12 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
231 ft
2 main spans
Daily traffic
1,550
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Stone Quarry RD over I 90 is a steel continuous stringer/multi-beam or girder carrying Stone Quarry RD over I 90 in Boone County, Illinois. It was built in 2013, so it is 12 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 1,550 vehicles a day, roughly 17% of them trucks, projected to reach 1,560 by 2046. The structure is 231 ft (70.5 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesStone Quarry RD
CrossesI 90
Location.5 MI S US 20
CountyBoone County
StateIllinois
Coordinates42.23329, -88.86121
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length231 ft (70.5 m)
Longest span114 ft (34.7 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2023)
Projected traffic1,560 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Stone Quarry RD over I 90 built?

It was built in 2013, making it 12 years old in 2025.

What condition is Stone Quarry RD over I 90 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 2023.

How much traffic does Stone Quarry RD over I 90 carry?

About 1,550 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Stone Quarry RD over I 90?

The structure is 231 ft (70.5 m) long with a longest span of 114 ft (34.7 m) and a deck 43 ft wide.

Who owns Stone Quarry RD over I 90?

It is owned by the State Toll Authority.