US Bridges

FAU-3818 Mack Road over W Br Dupage River

PoorPosted for load

DuPage County, Illinois · 0.2 MI E Il 59 · Structure no. 022302700000000

Built
1954
71 years old, rebuilt 1979
Condition
Poor
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
118 ft
4 main spans
Daily traffic
3,000
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU-3818 Mack Road over W Br Dupage River is a prestressed concrete box beam or girders - multiple carrying FAU-3818 Mack Road over W Br Dupage River in DuPage County, Illinois. It was built in 1954 and reconstructed in 1979, so it is 71 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 3 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. Its operating status is: posted for load restriction.

It carries about 3,000 vehicles a day, roughly 4% of them trucks, projected to reach 2,222 by 2046. The structure is 118 ft (36.1 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFAU-3818 Mack Road
CrossesW Br Dupage River
Location0.2 MI E Il 59
Coordinates41.84243, -88.19867
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating8.3 US tons
Inventory rating5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length118 ft (36.1 m)
Longest span28 ft (8.6 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2024)
Projected traffic2,222 by 2046
Trucks4%
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

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 FAU-3818 Mack Road over W Br Dupage River built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1979.

What condition is FAU-3818 Mack Road over W Br Dupage 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 October 2024.

How much traffic does FAU-3818 Mack Road over W Br Dupage River carry?

About 3,000 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is FAU-3818 Mack Road over W Br Dupage River?

The structure is 118 ft (36.1 m) long with a longest span of 28 ft (8.6 m) and a deck 36 ft wide.

Who owns FAU-3818 Mack Road over W Br Dupage River?

It is owned by the City or Municipal Highway Agency.