US Bridges

Ch 16 over Trib to Flat Branch

Fair

Shelby County, Illinois · 2.9 MI E Moweaqua · Structure no. 087501200000000

Built
1939
86 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
150
2024 count
Owner
County
County Highway Agency

About this bridge

Ch 16 over Trib to Flat Branch is a concrete culvert carrying Ch 16 over Trib to Flat Branch in Shelby County, Illinois. It was built in 1939, so it is 86 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 5 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 152 by 2046. The structure is 27 ft (8.2 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCh 16
CrossesTrib to Flat Branch
Location2.9 MI E Moweaqua
RouteCounty Highway 0
CountyShelby County
StateIllinois
Coordinates39.63083, -88.95835
Functional classRural Minor 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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic152 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 16 over Trib to Flat Branch built?

It was built in 1939, making it 86 years old in 2025.

What condition is Ch 16 over Trib to 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 Ch 16 over Trib to Flat Branch carry?

About 150 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Ch 16 over Trib to Flat Branch?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 22 ft wide.

Who owns Ch 16 over Trib to Flat Branch?

It is owned by the County Highway Agency.