US Bridges

CO RD 55 over Person Creek

Fair

LaSalle County, Illinois · N 2653 E 2325 · Structure no. 050304700000000

Built
1934
91 years old, rebuilt 1988
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
30 ft
1 main span
Daily traffic
1,300
2020 count
Owner
County
County Highway Agency

About this bridge

CO RD 55 over Person Creek is a concrete slab carrying CO RD 55 over Person Creek in LaSalle County, Illinois. It was built in 1934 and reconstructed in 1988, so it is 91 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 6 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 1,300 vehicles a day, roughly 7% of them trucks, projected to reach 1,313 by 2046. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesCO RD 55
CrossesPerson Creek
LocationN 2653 E 2325
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.31186, -88.71904
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98.2 US tons
Inventory rating63.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2020)
Projected traffic1,313 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CO RD 55 over Person Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1988.

What condition is CO RD 55 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 May 2023.

How much traffic does CO RD 55 over Person Creek carry?

About 1,300 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is CO RD 55 over Person Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns CO RD 55 over Person Creek?

It is owned by the County Highway Agency.