US Bridges

FAP 316-IL 26 & 72 over Leaf River

Fair

Ogle County, Illinois · 3 MI NW Forreston · Structure no. 071008000000000

Built
1991
34 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
142 ft
3 main spans
Daily traffic
3,250
2023 count
Owner
State
State Highway Agency

About this bridge

FAP 316-IL 26 & 72 over Leaf River is a prestressed concrete continuous stringer/multi-beam or girder carrying FAP 316-IL 26 & 72 over Leaf River in Ogle County, Illinois. It was built in 1991, so it is 34 years old, younger 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 3,250 vehicles a day, roughly 9% of them trucks, projected to reach 3,432 by 2046. The structure is 142 ft (43.4 m) long and 43 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesFAP 316-IL 26 & 72
CrossesLeaf River
Location3 MI NW Forreston
RouteState Highway 26
CountyOgle County
StateIllinois
Coordinates42.15036, -89.62827
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.4 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length142 ft (43.4 m)
Longest span51 ft (15.5 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,250 (2023)
Projected traffic3,432 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 FAP 316-IL 26 & 72 over Leaf River built?

It was built in 1991, making it 34 years old in 2025.

What condition is FAP 316-IL 26 & 72 over Leaf River 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 November 2022.

How much traffic does FAP 316-IL 26 & 72 over Leaf River carry?

About 3,250 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is FAP 316-IL 26 & 72 over Leaf River?

The structure is 142 ft (43.4 m) long with a longest span of 51 ft (15.5 m) and a deck 43 ft wide.

Who owns FAP 316-IL 26 & 72 over Leaf River?

It is owned by the State Highway Agency.