US Bridges

Il 23 FAP 68 (nb/S over Otter CR

Fair

LaSalle County, Illinois · 2.8 MI N. of Ill 18 · Structure no. 050016000000000

Built
1974
51 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
130 ft
3 main spans
Daily traffic
6,300
2023 count
Owner
State
State Highway Agency

About this bridge

Il 23 FAP 68 (nb/S over Otter CR is a steel continuous stringer/multi-beam or girder carrying Il 23 FAP 68 (nb/S over Otter CR in LaSalle County, Illinois. It was built in 1974, so it is 51 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 6,300 vehicles a day, roughly 8% of them trucks, projected to reach 6,414 by 2046. The structure is 130 ft (39.6 m) long and 92 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIl 23 FAP 68 (nb/S
CrossesOtter CR
Location2.8 MI N. of Ill 18
RouteState Highway 23
CountyLaSalle County
StateIllinois
Coordinates41.16172, -88.83645
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72.5 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span52 ft (15.8 m)
Deck width92 ft (28 m)
Roadway width71 ft (21.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2023)
Projected traffic6,414 by 2046
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Il 23 FAP 68 (nb/S over Otter CR built?

It was built in 1974, making it 51 years old in 2025.

What condition is Il 23 FAP 68 (nb/S over Otter CR 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 February 2024.

How much traffic does Il 23 FAP 68 (nb/S over Otter CR carry?

About 6,300 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Il 23 FAP 68 (nb/S over Otter CR?

The structure is 130 ft (39.6 m) long with a longest span of 52 ft (15.8 m) and a deck 92 ft wide.

Who owns Il 23 FAP 68 (nb/S over Otter CR?

It is owned by the State Highway Agency.