US Bridges

FAS 642(CH 19) over Flat Branch

Fair

Shelby County, Illinois · 4.0 M SW Yantisville · Structure no. 087500100000000

Built
1950
75 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
850
2024 count
Owner
County
County Highway Agency

About this bridge

FAS 642(CH 19) over Flat Branch is a concrete culvert carrying FAS 642(CH 19) over Flat Branch in Shelby County, Illinois. It was built in 1950, so it is 75 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 850 vehicles a day, roughly 16% of them trucks, projected to reach 960 by 2046. The structure is 44 ft (13.4 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAS 642(CH 19)
CrossesFlat Branch
Location4.0 M SW Yantisville
RouteCounty Highway 0
CountyShelby County
StateIllinois
Coordinates39.52237, -88.95334
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length44 ft (13.4 m)
Longest span11 ft (3.4 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2024)
Projected traffic960 by 2046
Trucks16%
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

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 642(CH 19) over Flat Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is FAS 642(CH 19) over Flat Branch 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 April 2023.

How much traffic does FAS 642(CH 19) over Flat Branch carry?

About 850 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is FAS 642(CH 19) over Flat Branch?

The structure is 44 ft (13.4 m) long with a longest span of 11 ft (3.4 m) and a deck 28 ft wide.

Who owns FAS 642(CH 19) over Flat Branch?

It is owned by the County Highway Agency.