US Bridges

TR 30A(STRAWN Rd) over Drainage Ditch

Fair

Macon County, Illinois · 3.6 MI NW Warrensbur · Structure no. 058500500000000

Built
1972
53 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
20
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 30A(STRAWN Rd) over Drainage Ditch is a concrete continuous culvert carrying TR 30A(STRAWN Rd) over Drainage Ditch in Macon County, Illinois. It was built in 1972, so it is 53 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 20 by 2046. The structure is 22 ft (6.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 30A(STRAWN Rd)
CrossesDrainage Ditch
Location3.6 MI NW Warrensbur
RouteCounty Highway 0
CountyMacon County
StateIllinois
Coordinates39.94842, -89.12449
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.1 US tons
Inventory rating25.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 15
Structure length22 ft (6.6 m)
Longest span10 ft (3.2 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic20 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 TR 30A(STRAWN Rd) over Drainage Ditch built?

It was built in 1972, making it 53 years old in 2025.

What condition is TR 30A(STRAWN Rd) 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 January 2024.

How much traffic does TR 30A(STRAWN Rd) over Drainage Ditch carry?

About 20 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is TR 30A(STRAWN Rd) over Drainage Ditch?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3.2 m) and a deck 26 ft wide.

Who owns TR 30A(STRAWN Rd) over Drainage Ditch?

It is owned by the Town or Township Highway Agency.