US Bridges

Ladd St. over Vermilion River

Good

Livingston County, Illinois · In Pontiac SW Side · Structure no. 053006800000000

Built
1927
98 years old, rebuilt 2001
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
239 ft
4 main spans
Daily traffic
4,100
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ladd St. over Vermilion River is a prestressed concrete continuous stringer/multi-beam or girder carrying Ladd St. over Vermilion River in Livingston County, Illinois. It was built in 1927 and reconstructed in 2001, so it is 98 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 4,100 vehicles a day, roughly 2% of them trucks, projected to reach 4,343 by 2046. The structure is 239 ft (72.7 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLadd St.
CrossesVermilion River
LocationIn Pontiac SW Side
CountyLivingston County
StateIllinois
Coordinates40.87863, -88.63809
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length239 ft (72.7 m)
Longest span60 ft (18.3 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2023)
Projected traffic4,343 by 2046
Trucks2%
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$513,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ladd St. over Vermilion River built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 2001.

What condition is Ladd St. over Vermilion River 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 June 2023.

How much traffic does Ladd St. over Vermilion River carry?

About 4,100 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Ladd St. over Vermilion River?

The structure is 239 ft (72.7 m) long with a longest span of 60 ft (18.3 m) and a deck 38 ft wide.

Who owns Ladd St. over Vermilion River?

It is owned by the City or Municipal Highway Agency.