US Bridges

Boyton ST over Drainage Ditch

Fair

Williamson County, Illinois · Boyton E of Park DR · Structure no. 100600400000000

Built
1967
58 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
2,400
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Boyton ST over Drainage Ditch is a concrete culvert carrying Boyton ST over Drainage Ditch in Williamson County, Illinois. It was built in 1967, so it is 58 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 2,400 vehicles a day, roughly 9% of them trucks, projected to reach 2,424 by 2046. The structure is 25 ft (7.5 m) long and 37 ft wide.

Location

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CarriesBoyton ST
CrossesDrainage Ditch
LocationBoyton E of Park DR
CountyWilliamson County
StateIllinois
Coordinates37.72214, -88.92212
Functional classUrban 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.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length25 ft (7.5 m)
Longest span11 ft (3.4 m)
Deck width37 ft (11.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2021)
Projected traffic2,424 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$86,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Boyton ST over Drainage Ditch built?

It was built in 1967, making it 58 years old in 2025.

What condition is Boyton ST over Drainage Ditch 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 Boyton ST over Drainage Ditch carry?

About 2,400 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Boyton ST over Drainage Ditch?

The structure is 25 ft (7.5 m) long with a longest span of 11 ft (3.4 m) and a deck 37 ft wide.

Who owns Boyton ST over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.