US Bridges

TR 32B Dix over Blackford Slough

Fair

Ford County, Illinois · 110N E900 · Structure no. 027309100000000

Built
1971
54 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
225
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 32B Dix over Blackford Slough is a prestressed concrete box beam or girders - multiple carrying TR 32B Dix over Blackford Slough in Ford County, Illinois. It was built in 1971, so it is 54 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 225 vehicles a day, roughly 24% of them trucks, projected to reach 227 by 2046. The structure is 54 ft (16.5 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesTR 32B Dix
CrossesBlackford Slough
Location110N E900
RouteCounty Highway 0
CountyFord County
StateIllinois
Coordinates40.41589, -88.29095
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating27.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length54 ft (16.5 m)
Longest span53 ft (16.2 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2023)
Projected traffic227 by 2046
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 32B Dix over Blackford Slough built?

It was built in 1971, making it 54 years old in 2025.

What condition is TR 32B Dix over Blackford Slough 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 May 2023.

How much traffic does TR 32B Dix over Blackford Slough carry?

About 225 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is TR 32B Dix over Blackford Slough?

The structure is 54 ft (16.5 m) long with a longest span of 53 ft (16.2 m) and a deck 24 ft wide.

Who owns TR 32B Dix over Blackford Slough?

It is owned by the Town or Township Highway Agency.