US Bridges

FAS268 A/Ch 15 over Mill Race

Fair

LaSalle County, Illinois · Ch 15 N Mill Race · Structure no. 050690300000000

Built
1912
113 years old, rebuilt 1982
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
81 ft
1 main span
Daily traffic
3,450
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAS268 A/Ch 15 over Mill Race is a prestressed concrete box beam or girders - multiple carrying FAS268 A/Ch 15 over Mill Race in LaSalle County, Illinois. It was built in 1912 and reconstructed in 1982, so it is 113 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 3,450 vehicles a day, roughly 10% of them trucks, projected to reach 3,485 by 2046. The structure is 81 ft (24.7 m) long and 43 ft wide.

CarriesFAS268 A/Ch 15
CrossesMill Race
LocationCh 15 N Mill Race
RouteCounty Highway 0
Coordinates41.32701, -88.70931
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.8 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span78 ft (23.8 m)
Deck width43 ft (13 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,450 (2020)
Projected traffic3,485 by 2046
Trucks10%
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 FAS268 A/Ch 15 over Mill Race built?

It was built in 1912, making it 113 years old in 2025. It was reconstructed in 1982.

What condition is FAS268 A/Ch 15 over Mill Race 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 August 2023.

How much traffic does FAS268 A/Ch 15 over Mill Race carry?

About 3,450 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is FAS268 A/Ch 15 over Mill Race?

The structure is 81 ft (24.7 m) long with a longest span of 78 ft (23.8 m) and a deck 43 ft wide.

Who owns FAS268 A/Ch 15 over Mill Race?

It is owned by the City or Municipal Highway Agency.