US Bridges

Il 251 (fap 734) over UP RR

Fair

Winnebago County, Illinois · Kishwaukee St-Rkford · Structure no. 101016000000000

Built
1991
34 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
106 ft
3 main spans
Daily traffic
15,800
2023 count
Owner
State
State Highway Agency

About this bridge

Il 251 (fap 734) over UP RR is a concrete continuous slab carrying Il 251 (fap 734) over UP RR in Winnebago 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 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 15,800 vehicles a day, roughly 6% of them trucks, projected to reach 15,150 by 2046. The structure is 106 ft (32.2 m) long and 91 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIl 251 (fap 734)
CrossesUP RR
LocationKishwaukee St-Rkford
RouteState Highway 251
CountyWinnebago County
StateIllinois
Coordinates42.26264, -89.08667
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length106 ft (32.2 m)
Longest span40 ft (12.1 m)
Deck width91 ft (27.6 m)
Roadway width61 ft (18.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,800 (2023)
Projected traffic15,150 by 2046
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 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 251 (fap 734) over UP RR built?

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

What condition is Il 251 (fap 734) over UP RR 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 April 2023.

How much traffic does Il 251 (fap 734) over UP RR carry?

About 15,800 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Il 251 (fap 734) over UP RR?

The structure is 106 ft (32.2 m) long with a longest span of 40 ft (12.1 m) and a deck 91 ft wide.

Who owns Il 251 (fap 734) over UP RR?

It is owned by the State Highway Agency.