US Bridges

TR 255 over L Vermillion R

Fair

LaSalle County, Illinois · N 3179th E 340 · Structure no. 050316300000000

Built
1928
97 years old, rebuilt 1980
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
74 ft
3 main spans
Daily traffic
100
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 255 over L Vermillion R is a prestressed concrete box beam or girders - multiple carrying TR 255 over L Vermillion R in LaSalle County, Illinois. It was built in 1928 and reconstructed in 1980, so it is 97 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 100 vehicles a day, roughly 8% of them trucks, projected to reach 101 by 2046. The structure is 74 ft (22.6 m) long and 20 ft wide.

Location

Open in Google Maps
CarriesTR 255
CrossesL Vermillion R
LocationN 3179th E 340
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.39298, -89.09939
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating72.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length74 ft (22.6 m)
Longest span25 ft (7.6 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic101 by 2046
Trucks8%
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 255 over L Vermillion R built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1980.

What condition is TR 255 over L Vermillion R 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 June 2024.

How much traffic does TR 255 over L Vermillion R carry?

About 100 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is TR 255 over L Vermillion R?

The structure is 74 ft (22.6 m) long with a longest span of 25 ft (7.6 m) and a deck 20 ft wide.

Who owns TR 255 over L Vermillion R?

It is owned by the Town or Township Highway Agency.