US Bridges

TR 66 over Long Grove Creek

FairPosted for load

Shelby County, Illinois · 1.2 MI N Moweaqua · Structure no. 087307900000000

Built
1922
103 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
300
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 66 over Long Grove Creek is a concrete slab carrying TR 66 over Long Grove Creek in Shelby County, Illinois. It was built in 1922, so it is 103 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. Its operating status is: posted for load restriction.

It carries about 300 vehicles a day, roughly 2% of them trucks, projected to reach 202 by 2046. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR 66
CrossesLong Grove Creek
Location1.2 MI N Moweaqua
RouteCounty Highway 0
CountyShelby County
StateIllinois
Coordinates39.64372, -89.01524
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2024)
Projected traffic202 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$264,000
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 66 over Long Grove Creek built?

It was built in 1922, making it 103 years old in 2025.

What condition is TR 66 over Long Grove Creek 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 April 2023.

How much traffic does TR 66 over Long Grove Creek carry?

About 300 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is TR 66 over Long Grove Creek?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.

Who owns TR 66 over Long Grove Creek?

It is owned by the Town or Township Highway Agency.