US Bridges

FAS-96 (somonauk R over Little Rock Creek

Good

DeKalb County, Illinois · 915N 1550E · Structure no. 019307800000000

Built
2018
7 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
85 ft
1 main span
Daily traffic
3,050
2021 count
Owner
County
County Highway Agency

About this bridge

FAS-96 (somonauk R over Little Rock Creek is a steel stringer/multi-beam or girder carrying FAS-96 (somonauk R over Little Rock Creek in DeKalb County, Illinois. It was built in 2018, so it is 7 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 3,050 vehicles a day, roughly 12% of them trucks, projected to reach 3,416 by 2046. The structure is 85 ft (26 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAS-96 (somonauk R
CrossesLittle Rock Creek
Location915N 1550E
RouteCounty Highway 0
CountyDeKalb County
StateIllinois
Coordinates41.76506, -88.65112
Functional classRural Major 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
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 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 length85 ft (26 m)
Longest span82 ft (25 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,050 (2021)
Projected traffic3,416 by 2046
Trucks12%
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

OwnerCounty Highway Agency
Maintained byCounty 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 FAS-96 (somonauk R over Little Rock Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is FAS-96 (somonauk R over Little Rock 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 2024.

How much traffic does FAS-96 (somonauk R over Little Rock Creek carry?

About 3,050 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is FAS-96 (somonauk R over Little Rock Creek?

The structure is 85 ft (26 m) long with a longest span of 82 ft (25 m) and a deck 30 ft wide.

Who owns FAS-96 (somonauk R over Little Rock Creek?

It is owned by the County Highway Agency.