US Bridges

US 51 (fap 322) over Long Grove Cr.

Fair

Shelby County, Illinois · .5 MI N of Moweaqua · Structure no. 087002800000000

Built
2002
23 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
4,800
2023 count
Owner
State
State Highway Agency

About this bridge

US 51 (fap 322) over Long Grove Cr. is a prestressed concrete stringer/multi-beam or girder carrying US 51 (fap 322) over Long Grove Cr. in Shelby County, Illinois. It was built in 2002, so it is 23 years old, younger 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 6 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 4,800 vehicles a day, roughly 17% of them trucks, projected to reach 2,550 by 2046. The structure is 94 ft (28.7 m) long and 43 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesUS 51 (fap 322)
CrossesLong Grove Cr.
Location.5 MI N of Moweaqua
RouteU.S. Route 51
CountyShelby County
StateIllinois
Coordinates39.6437, -89.01095
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.6 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length94 ft (28.7 m)
Longest span92 ft (27.9 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2023)
Projected traffic2,550 by 2046
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 51 (fap 322) over Long Grove Cr. built?

It was built in 2002, making it 23 years old in 2025.

What condition is US 51 (fap 322) over Long Grove Cr. 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 August 2023.

How much traffic does US 51 (fap 322) over Long Grove Cr. carry?

About 4,800 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US 51 (fap 322) over Long Grove Cr.?

The structure is 94 ft (28.7 m) long with a longest span of 92 ft (27.9 m) and a deck 43 ft wide.

Who owns US 51 (fap 322) over Long Grove Cr.?

It is owned by the State Highway Agency.