US Bridges

Niantic RD over S Fork Lake Fork Bch

Good

Logan County, Illinois · 3.5 MI S Latham · Structure no. 054301300000000

Built
1960
65 years old
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
—
2020 count
Owner
County
County Highway Agency

About this bridge

Niantic RD over S Fork Lake Fork Bch is a prestressed concrete box beam or girders - multiple carrying Niantic RD over S Fork Lake Fork Bch in Logan County, Illinois. It was built in 1960, so it is 65 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.

No traffic count is recorded. The structure is 44 ft (13.4 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNiantic RD
CrossesS Fork Lake Fork Bch
Location3.5 MI S Latham
RouteCounty Highway 0
Coordinates39.91752, -89.16226
Functional classRural Major Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span42 ft (12.7 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic210 by 2046
Trucks0%
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 Niantic RD over S Fork Lake Fork Bch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Niantic RD over S Fork Lake Fork Bch 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 2023.

How much traffic does Niantic RD over S Fork Lake Fork Bch carry?

No traffic count is recorded for this structure.

How long is Niantic RD over S Fork Lake Fork Bch?

The structure is 44 ft (13.4 m) long with a longest span of 42 ft (12.7 m) and a deck 27 ft wide.

Who owns Niantic RD over S Fork Lake Fork Bch?

It is owned by the County Highway Agency.