US Bridges

Pierpont Ave over S. Branch Kent Crk.

Good

Winnebago County, Illinois · 1.25 MI S of State · Structure no. 101612300000000

Built
1953
72 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
900
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pierpont Ave over S. Branch Kent Crk. is a steel stringer/multi-beam or girder carrying Pierpont Ave over S. Branch Kent Crk. in Winnebago County, Illinois. It was built in 1953, so it is 72 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 900 vehicles a day, roughly 10% of them trucks, projected to reach 859 by 2046. The structure is 37 ft (11.3 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPierpont Ave
CrossesS. Branch Kent Crk.
Location1.25 MI S of State
CountyWinnebago County
StateIllinois
Coordinates42.25911, -89.13514
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length37 ft (11.3 m)
Longest span36 ft (11 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2022)
Projected traffic859 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$137,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pierpont Ave over S. Branch Kent Crk. built?

It was built in 1953, making it 72 years old in 2025.

What condition is Pierpont Ave over S. Branch Kent Crk. in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Pierpont Ave over S. Branch Kent Crk. carry?

About 900 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Pierpont Ave over S. Branch Kent Crk.?

The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 30 ft wide.

Who owns Pierpont Ave over S. Branch Kent Crk.?

It is owned by the City or Municipal Highway Agency.