US Bridges

Millersburg Avenue over FAI 70

Good

Bond County, Illinois · 5.7 M E Pocahontas · Structure no. 003004700000000

Built
1966
59 years old, rebuilt 2003
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
266 ft
4 main spans
Daily traffic
800
2020 count
Owner
State
State Highway Agency

About this bridge

Millersburg Avenue over FAI 70 is a steel continuous stringer/multi-beam or girder carrying Millersburg Avenue over FAI 70 in Bond County, Illinois. It was built in 1966 and reconstructed in 2003, so it is 59 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 800 vehicles a day, roughly 18% of them trucks, projected to reach 808 by 2046. The structure is 266 ft (81.1 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMillersburg Avenue
CrossesFAI 70
Location5.7 M E Pocahontas
RouteCounty Highway 0
Coordinates38.85401, -89.45122
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.9 US tons
Inventory rating53.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length266 ft (81.1 m)
Longest span88 ft (26.7 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2020)
Projected traffic808 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Millersburg Avenue over FAI 70 built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2003.

What condition is Millersburg Avenue over FAI 70 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does Millersburg Avenue over FAI 70 carry?

About 800 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is Millersburg Avenue over FAI 70?

The structure is 266 ft (81.1 m) long with a longest span of 88 ft (26.7 m) and a deck 36 ft wide.

Who owns Millersburg Avenue over FAI 70?

It is owned by the State Highway Agency.