US Bridges

FAU-1234 (oak SP R over Des Plaines River

Poor

Lake County, Illinois · .75 M E of Ill 21 · Structure no. 049304700000000

Built
1967
58 years old
Condition
Poor
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
174 ft
4 main spans
Daily traffic
2,800
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

FAU-1234 (oak SP R over Des Plaines River is a concrete continuous tee beam carrying FAU-1234 (oak SP R over Des Plaines River in Lake County, Illinois. It was built in 1967, so it is 58 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,800 vehicles a day, roughly 2% of them trucks, projected to reach 3,586 by 2046. The structure is 174 ft (53 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAU-1234 (oak SP R
CrossesDes Plaines River
Location.75 M E of Ill 21
CountyLake County
StateIllinois
Coordinates42.28885, -87.93749
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length174 ft (53 m)
Longest span50 ft (15.2 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2023)
Projected traffic3,586 by 2046
Trucks2%
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

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 FAU-1234 (oak SP R over Des Plaines River built?

It was built in 1967, making it 58 years old in 2025.

What condition is FAU-1234 (oak SP R over Des Plaines River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does FAU-1234 (oak SP R over Des Plaines River carry?

About 2,800 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is FAU-1234 (oak SP R over Des Plaines River?

The structure is 174 ft (53 m) long with a longest span of 50 ft (15.2 m) and a deck 38 ft wide.

Who owns FAU-1234 (oak SP R over Des Plaines River?

It is owned by the Town or Township Highway Agency.