US Bridges

Ch 3/FAS 1747 over Kingsbury Lake

Fair

Bond County, Illinois · 4.75M NW Mulberry Gr · Structure no. 003302500000000

Built
1969
56 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
107 ft
2 main spans
Daily traffic
450
2020 count
Owner
County
County Highway Agency

About this bridge

Ch 3/FAS 1747 over Kingsbury Lake is a prestressed concrete stringer/multi-beam or girder carrying Ch 3/FAS 1747 over Kingsbury Lake in Bond County, Illinois. It was built in 1969, so it is 56 years old, older 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 450 vehicles a day, roughly 5% of them trucks, projected to reach 455 by 2046. The structure is 107 ft (32.6 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCh 3/FAS 1747
CrossesKingsbury Lake
Location4.75M NW Mulberry Gr
RouteCounty Highway 0
CountyBond County
StateIllinois
Coordinates38.94769, -89.35824
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length107 ft (32.6 m)
Longest span51 ft (15.5 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2020)
Projected traffic455 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Ch 3/FAS 1747 over Kingsbury Lake built?

It was built in 1969, making it 56 years old in 2025.

What condition is Ch 3/FAS 1747 over Kingsbury Lake 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 December 2023.

How much traffic does Ch 3/FAS 1747 over Kingsbury Lake carry?

About 450 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Ch 3/FAS 1747 over Kingsbury Lake?

The structure is 107 ft (32.6 m) long with a longest span of 51 ft (15.5 m) and a deck 28 ft wide.

Who owns Ch 3/FAS 1747 over Kingsbury Lake?

It is owned by the County Highway Agency.