US Bridges

US20 Freport Byps over Pecatonica River

Fair

Stephenson County, Illinois · 2.5 MI W of Il 26 · Structure no. 089004500000000

Built
1987
38 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
758 ft
7 main spans
Daily traffic
6,150
2023 count
Owner
State
State Highway Agency

About this bridge

US20 Freport Byps over Pecatonica River is a steel stringer/multi-beam or girder carrying US20 Freport Byps over Pecatonica River in Stephenson County, Illinois. It was built in 1987, so it is 38 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 6,150 vehicles a day, roughly 20% of them trucks, projected to reach 2,980 by 2046. The structure is 758 ft (231 m) long and 47 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS20 Freport Byps
CrossesPecatonica River
Location2.5 MI W of Il 26
RouteU.S. Route 20
CountyStephenson County
StateIllinois
Coordinates42.33137, -89.67889
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
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length758 ft (231 m)
Longest span126 ft (38.4 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,150 (2023)
Projected traffic2,980 by 2046
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 US20 Freport Byps over Pecatonica River built?

It was built in 1987, making it 38 years old in 2025.

What condition is US20 Freport Byps over Pecatonica 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 April 2023.

How much traffic does US20 Freport Byps over Pecatonica River carry?

About 6,150 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is US20 Freport Byps over Pecatonica River?

The structure is 758 ft (231 m) long with a longest span of 126 ft (38.4 m) and a deck 47 ft wide.

Who owns US20 Freport Byps over Pecatonica River?

It is owned by the State Highway Agency.