US Bridges

Frontage Road over Salt Creek

Fair

DuPage County, Illinois · 0.6MI E of Il 83 · Structure no. 022600000000000

Built
2008
17 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
156 ft
3 main spans
Daily traffic
2,650
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Frontage Road over Salt Creek is a steel continuous stringer/multi-beam or girder carrying Frontage Road over Salt Creek in DuPage 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 2,650 vehicles a day, roughly 2% of them trucks, projected to reach 1,768 by 2046. The structure is 156 ft (47.6 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesFrontage Road
CrossesSalt Creek
Location0.6MI E of Il 83
RouteCity Street 0
CountyDuPage County
StateIllinois
Coordinates41.86069, -87.9486
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating48.6 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 length156 ft (47.6 m)
Longest span69 ft (21 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,650 (2024)
Projected traffic1,768 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Frontage Road over Salt Creek built?

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

What condition is Frontage Road over Salt 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 October 2023.

How much traffic does Frontage Road over Salt Creek carry?

About 2,650 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Frontage Road over Salt Creek?

The structure is 156 ft (47.6 m) long with a longest span of 69 ft (21 m) and a deck 35 ft wide.

Who owns Frontage Road over Salt Creek?

It is owned by the City or Municipal Highway Agency.