US Bridges

FAS268 B/CH15 over Otter Creek

Fair

LaSalle County, Illinois · E 22nd N 1505 · Structure no. 050302600000000

Built
1955
70 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
66 ft
2 main spans
Daily traffic
575
2020 count
Owner
County
County Highway Agency

About this bridge

FAS268 B/CH15 over Otter Creek is a steel continuous stringer/multi-beam or girder carrying FAS268 B/CH15 over Otter Creek in LaSalle County, Illinois. It was built in 1955, so it is 70 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 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 575 vehicles a day, roughly 5% of them trucks, projected to reach 581 by 2046. The structure is 66 ft (20 m) long and 26 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesFAS268 B/CH15
CrossesOtter Creek
LocationE 22nd N 1505
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.1512, -88.74019
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 inspectionMay 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length66 ft (20 m)
Longest span32 ft (9.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic575 (2020)
Projected traffic581 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 FAS268 B/CH15 over Otter Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is FAS268 B/CH15 over Otter 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 FAS268 B/CH15 over Otter Creek carry?

About 575 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is FAS268 B/CH15 over Otter Creek?

The structure is 66 ft (20 m) long with a longest span of 32 ft (9.8 m) and a deck 26 ft wide.

Who owns FAS268 B/CH15 over Otter Creek?

It is owned by the County Highway Agency.