US Bridges

Seneca ST#2300 over Stream

Poor

LaSalle County, Illinois · N 2553 E 2890 · Structure no. 050305000000000

Built
1965
60 years old
Condition
Poor
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
1,600
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Seneca ST#2300 over Stream is a prestressed concrete box beam or girders - multiple carrying Seneca ST#2300 over Stream in LaSalle County, Illinois. It was built in 1965, so it is 60 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,600 vehicles a day, roughly 8% of them trucks, projected to reach 1,616 by 2046. The structure is 48 ft (14.6 m) long and 27 ft wide.

Location

Open in Google Maps
CarriesSeneca ST#2300
CrossesStream
LocationN 2553 E 2890
RouteCity Street 0
CountyLaSalle County
StateIllinois
Coordinates41.29674, -88.60971
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating23.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length48 ft (14.6 m)
Longest span48 ft (14.6 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2020)
Projected traffic1,616 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

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 Seneca ST#2300 over Stream built?

It was built in 1965, making it 60 years old in 2025.

What condition is Seneca ST#2300 over Stream in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.

How much traffic does Seneca ST#2300 over Stream carry?

About 1,600 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Seneca ST#2300 over Stream?

The structure is 48 ft (14.6 m) long with a longest span of 48 ft (14.6 m) and a deck 27 ft wide.

Who owns Seneca ST#2300 over Stream?

It is owned by the City or Municipal Highway Agency.