US Bridges

TR 309 over Little Crab Orchard

Fair

Jackson County, Illinois · N Lne Sec 31-9-1 · Structure no. 039314800000000

Built
1980
45 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
900
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

TR 309 over Little Crab Orchard is a prestressed concrete box beam or girders - multiple carrying TR 309 over Little Crab Orchard in Jackson County, Illinois. It was built in 1980, so it is 45 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 5 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 900 vehicles a day, roughly 24% of them trucks, projected to reach 1,061 by 2046. The structure is 56 ft (17.1 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTR 309
CrossesLittle Crab Orchard
LocationN Lne Sec 31-9-1
RouteCity Street 0
CountyJackson County
StateIllinois
Coordinates37.70114, -89.25313
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width29 ft (8.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2022)
Projected traffic1,061 by 2046
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 TR 309 over Little Crab Orchard built?

It was built in 1980, making it 45 years old in 2025.

What condition is TR 309 over Little Crab Orchard 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 September 2023.

How much traffic does TR 309 over Little Crab Orchard carry?

About 900 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is TR 309 over Little Crab Orchard?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 29 ft wide.

Who owns TR 309 over Little Crab Orchard?

It is owned by the City or Municipal Highway Agency.