US Bridges

Hillsboro Fillmore over West Branch Dry Fork

Fair

Montgomery County, Illinois · 1.8 MI W of Fillmore · Structure no. 068301000000000

Built
1969
56 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
92 ft
3 main spans
Daily traffic
550
2020 count
Owner
County
County Highway Agency

About this bridge

Hillsboro Fillmore over West Branch Dry Fork is a prestressed concrete box beam or girders - multiple carrying Hillsboro Fillmore over West Branch Dry Fork in Montgomery County, Illinois. It was built in 1969, so it is 56 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 550 vehicles a day, roughly 5% of them trucks, projected to reach 556 by 2046. The structure is 92 ft (28 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHillsboro Fillmore
CrossesWest Branch Dry Fork
Location1.8 MI W of Fillmore
RouteCounty Highway 0
CountyMontgomery County
StateIllinois
Coordinates39.11893, -89.31126
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating45.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length92 ft (28 m)
Longest span30 ft (9.1 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2020)
Projected traffic556 by 2046
Trucks5%
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

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 Hillsboro Fillmore over West Branch Dry Fork built?

It was built in 1969, making it 56 years old in 2025.

What condition is Hillsboro Fillmore over West Branch Dry Fork 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 2025.

How much traffic does Hillsboro Fillmore over West Branch Dry Fork carry?

About 550 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Hillsboro Fillmore over West Branch Dry Fork?

The structure is 92 ft (28 m) long with a longest span of 30 ft (9.1 m) and a deck 40 ft wide.

Who owns Hillsboro Fillmore over West Branch Dry Fork?

It is owned by the County Highway Agency.