US Bridges

Or 11 over Person Creek

Fair

LaSalle County, Illinois · Illini Park RD West · Structure no. 050993000000000

Built
1984
41 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
21 ft
3 main spans
Daily traffic
325
2020 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Or 11 over Person Creek is a steel culvert carrying Or 11 over Person Creek in LaSalle County, Illinois. It was built in 1984, so it is 41 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 325 vehicles a day, roughly 7% of them trucks, projected to reach 328 by 2046. The structure is 21 ft (6.3 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesOr 11
CrossesPerson Creek
LocationIllini Park RD West
CountyLaSalle County
StateIllinois
Coordinates41.32045, -88.71975
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating98.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span7 ft (2 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2020)
Projected traffic328 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Or 11 over Person Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Or 11 over Person 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 September 2024.

How much traffic does Or 11 over Person Creek carry?

About 325 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Or 11 over Person Creek?

The structure is 21 ft (6.3 m) long with a longest span of 7 ft (2 m) and a deck 30 ft wide.

Who owns Or 11 over Person Creek?

It is owned by the State Park, Forest, or Reservation Agency.