US Bridges

River Road(fau 379 over Blackberry Creek

Good

Kendall County, Illinois · 0.20 Mil W Ill 47 · Structure no. 047650000000000

Built
2013
12 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
99 ft
1 main span
Daily traffic
3,650
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

River Road(fau 379 over Blackberry Creek is a steel stringer/multi-beam or girder carrying River Road(fau 379 over Blackberry Creek in Kendall 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,650 vehicles a day, roughly 8% of them trucks, projected to reach 6,850 by 2046. The structure is 99 ft (30.3 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRiver Road(fau 379
CrossesBlackberry Creek
Location0.20 Mil W Ill 47
CountyKendall County
StateIllinois
Coordinates41.64538, -88.4502
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length99 ft (30.3 m)
Longest span95 ft (29.1 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,650 (2024)
Projected traffic6,850 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 River Road(fau 379 over Blackberry Creek built?

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

What condition is River Road(fau 379 over Blackberry Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does River Road(fau 379 over Blackberry Creek carry?

About 3,650 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is River Road(fau 379 over Blackberry Creek?

The structure is 99 ft (30.3 m) long with a longest span of 95 ft (29.1 m) and a deck 33 ft wide.

Who owns River Road(fau 379 over Blackberry Creek?

It is owned by the City or Municipal Highway Agency.