US Bridges

Water St/N 4550th over Indian Creek

Poor

LaSalle County, Illinois · 0.44 MI N of US 34 · Structure no. 050025400000000

Built
1925
100 years old
Condition
Poor
inspected March 2024
Type
Tee Beam
Concrete
Length
63 ft
1 main span
Daily traffic
275
2020 count
Owner
State
State Highway Agency

About this bridge

Water St/N 4550th over Indian Creek is a concrete tee beam carrying Water St/N 4550th over Indian Creek in LaSalle County, Illinois. It was built in 1925, so it is 100 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 275 vehicles a day, roughly 10% of them trucks, projected to reach 278 by 2046. The structure is 63 ft (19.3 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesWater St/N 4550th
CrossesIndian Creek
Location0.44 MI N of US 34
RouteCity Street 0
CountyLaSalle County
StateIllinois
Coordinates41.59153, -88.91557
Functional classRural Local

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.
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 inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating70.8 US tons
Inventory rating42.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadUnknown
Structure length63 ft (19.3 m)
Longest span61 ft (18.7 m)
Deck width25 ft (7.6 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2020)
Projected traffic278 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Water St/N 4550th over Indian Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is Water St/N 4550th over Indian Creek 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 March 2024.

How much traffic does Water St/N 4550th over Indian Creek carry?

About 275 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Water St/N 4550th over Indian Creek?

The structure is 63 ft (19.3 m) long with a longest span of 61 ft (18.7 m) and a deck 25 ft wide.

Who owns Water St/N 4550th over Indian Creek?

It is owned by the State Highway Agency.