US Bridges

FAS 746 over Prough Branch

Good

Greene County, Illinois · 2 MI E.Of Kane · Structure no. 031502900000000

Built
1901
124 years old, rebuilt 1981
Condition
Good
inspected August 2024
Type
Channel Beam
Concrete
Length
76 ft
3 main spans
Daily traffic
150
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

FAS 746 over Prough Branch is a concrete channel beam carrying FAS 746 over Prough Branch in Greene County, Illinois. It was built in 1901 and reconstructed in 1981, so it is 124 years old, older 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 150 vehicles a day, roughly 9% of them trucks, projected to reach 101 by 2046. The structure is 76 ft (23.2 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFAS 746
CrossesPrough Branch
Location2 MI E.Of Kane
RouteCounty Highway 0
Coordinates39.18878, -90.31773
Functional classRural Minor 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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.6 US tons
Inventory rating32.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span28 ft (8.5 m)
Deck width26 ft (8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic101 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 746 over Prough Branch built?

It was built in 1901, making it 124 years old in 2025. It was reconstructed in 1981.

What condition is FAS 746 over Prough Branch 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 746 over Prough Branch carry?

About 150 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is FAS 746 over Prough Branch?

The structure is 76 ft (23.2 m) long with a longest span of 28 ft (8.5 m) and a deck 26 ft wide.

Who owns FAS 746 over Prough Branch?

It is owned by the Town or Township Highway Agency.