US Bridges

FAS 488 over Branch Rock Creek

Good

McLean County, Illinois · 2.0 MI W Carlock · Structure no. 057403000000000

Built
2007
18 years old
Condition
Good
inspected March 2022
Type
Frame
Concrete
Length
34 ft
1 main span
Daily traffic
400
2024 count
Owner
County
County Highway Agency

About this bridge

FAS 488 over Branch Rock Creek is a concrete frame carrying FAS 488 over Branch Rock Creek in McLean County, Illinois. It was built in 2007, so it is 18 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 400 vehicles a day, roughly 18% of them trucks, projected to reach 404 by 2046. The structure is 34 ft (10.4 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFAS 488
CrossesBranch Rock Creek
Location2.0 MI W Carlock
RouteCounty Highway 0
Coordinates40.57997, -89.17248
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
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width42 ft (12.9 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2024)
Projected traffic404 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 488 over Branch Rock Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is FAS 488 over Branch 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 March 2022.

How much traffic does FAS 488 over Branch Rock Creek carry?

About 400 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is FAS 488 over Branch Rock Creek?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 42 ft wide.

Who owns FAS 488 over Branch Rock Creek?

It is owned by the County Highway Agency.