US Bridges

Pearl ST over Fox River

Fair

McHenry County, Illinois · 0.05 MI W River RD · Structure no. 056311900000000

Built
1977
48 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
418 ft
3 main spans
Daily traffic
4,500
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pearl ST over Fox River is a steel continuous stringer/multi-beam or girder carrying Pearl ST over Fox River in McHenry County, Illinois. It was built in 1977, so it is 48 years old, older 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 4,500 vehicles a day, roughly 5% of them trucks, projected to reach 5,400 by 2046. The structure is 418 ft (127.4 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPearl ST
CrossesFox River
Location0.05 MI W River RD
CountyMcHenry County
StateIllinois
Coordinates42.34566, -88.26139
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length418 ft (127.4 m)
Longest span162 ft (49.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2021)
Projected traffic5,400 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Pearl ST over Fox River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Pearl ST over Fox River 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 May 2024.

How much traffic does Pearl ST over Fox River carry?

About 4,500 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Pearl ST over Fox River?

The structure is 418 ft (127.4 m) long with a longest span of 162 ft (49.4 m) and a deck 32 ft wide.

Who owns Pearl ST over Fox River?

It is owned by the City or Municipal Highway Agency.