US Bridges

Rockwell RD over Vermilion River

PoorClosed to traffic

LaSalle County, Illinois · E of Union ST · Structure no. 050650200000000

Built
1940
85 years old, rebuilt 2010
Condition
Poor
inspected August 2021
Type
Truss - Deck
Steel
Length
158 ft
2 main spans
Daily traffic
250
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Rockwell RD over Vermilion River is a steel truss - deck carrying Rockwell RD over Vermilion River in LaSalle County, Illinois. It was built in 1940 and reconstructed in 2010, so it is 85 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. Its operating status is: closed to all traffic.

It carries about 250 vehicles a day, roughly 7% of them trucks, projected to reach 253 by 2046. The structure is 158 ft (48.2 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRockwell RD
CrossesVermilion River
LocationE of Union ST
RouteCity Street 0
CountyLaSalle County
StateIllinois
Coordinates41.32789, -89.0834
Functional classUrban 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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2021
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length158 ft (48.2 m)
Longest span106 ft (32.3 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic253 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$566,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rockwell RD over Vermilion River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2010.

What condition is Rockwell RD over Vermilion River 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 August 2021.

How much traffic does Rockwell RD over Vermilion River carry?

About 250 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Rockwell RD over Vermilion River?

The structure is 158 ft (48.2 m) long with a longest span of 106 ft (32.3 m) and a deck 23 ft wide.

Who owns Rockwell RD over Vermilion River?

It is owned by the City or Municipal Highway Agency.