US Bridges

TR 66A over Unnamed Stream

Good

Clark County, Illinois · 4.3 Mi. NE of Casey · Structure no. 012334300000000

Built
2019
6 years old
Condition
Good
inspected February 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
75
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 66A over Unnamed Stream is a prestressed concrete box beam or girders - multiple carrying TR 66A over Unnamed Stream in Clark County, Illinois. It was built in 2019, so it is 6 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, projected to reach 76 by 2046. The structure is 38 ft (11.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 66A
CrossesUnnamed Stream
Location4.3 Mi. NE of Casey
RouteCounty Highway 0
CountyClark County
StateIllinois
Coordinates39.33979, -87.92772
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length38 ft (11.7 m)
Longest span36 ft (10.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2021)
Projected traffic76 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

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was TR 66A over Unnamed Stream built?

It was built in 2019, making it 6 years old in 2025.

What condition is TR 66A over Unnamed Stream 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 February 2022.

How much traffic does TR 66A over Unnamed Stream carry?

About 75 vehicles per day (2021 count).

How long is TR 66A over Unnamed Stream?

The structure is 38 ft (11.7 m) long with a longest span of 36 ft (10.9 m) and a deck 28 ft wide.

Who owns TR 66A over Unnamed Stream?

It is owned by the Town or Township Highway Agency.