US Bridges

TR 324 a over Buck Creek

Fair

LaSalle County, Illinois · E 19th N 3460 · Structure no. 050301200000000

Built
1964
61 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
475
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 324 a over Buck Creek is a prestressed concrete box beam or girders - multiple carrying TR 324 a over Buck Creek in LaSalle County, Illinois. It was built in 1964, so it is 61 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.

It carries about 475 vehicles a day, roughly 4% of them trucks, projected to reach 480 by 2046. The structure is 49 ft (14.9 m) long and 26 ft wide.

Location

Open in Google Maps
CarriesTR 324 a
CrossesBuck Creek
LocationE 19th N 3460
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.43662, -88.80372
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
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length49 ft (14.9 m)
Longest span47 ft (14.3 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2020)
Projected traffic480 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 324 a over Buck Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is TR 324 a over Buck 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 July 2024.

How much traffic does TR 324 a over Buck Creek carry?

About 475 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is TR 324 a over Buck Creek?

The structure is 49 ft (14.9 m) long with a longest span of 47 ft (14.3 m) and a deck 26 ft wide.

Who owns TR 324 a over Buck Creek?

It is owned by the Town or Township Highway Agency.