US Bridges

Old Rt 66 Nb/Fas 2 over Mazon River

PoorPosted for load

Livingston County, Illinois · 3.19 MI N Odell RD · Structure no. 053001300000000

Built
1954
71 years old
Condition
Poor
inspected February 2025
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
1,550
2023 count
Owner
State
State Highway Agency

About this bridge

Old Rt 66 Nb/Fas 2 over Mazon River is a concrete tee beam carrying Old Rt 66 Nb/Fas 2 over Mazon River in Livingston County, Illinois. It was built in 1954, so it is 71 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,550 vehicles a day, roughly 8% of them trucks, projected to reach 1,712 by 2035. The structure is 33 ft (10.2 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesOld Rt 66 Nb/Fas 2
CrossesMazon River
Location3.19 MI N Odell RD
RouteCounty Highway 0
Coordinates41.05018, -88.48139
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating24.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.2 m)
Longest span30 ft (9.2 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2023)
Projected traffic1,712 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 Old Rt 66 Nb/Fas 2 over Mazon River built?

It was built in 1954, making it 71 years old in 2025.

What condition is Old Rt 66 Nb/Fas 2 over Mazon River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does Old Rt 66 Nb/Fas 2 over Mazon River carry?

About 1,550 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Old Rt 66 Nb/Fas 2 over Mazon River?

The structure is 33 ft (10.2 m) long with a longest span of 30 ft (9.2 m) and a deck 42 ft wide.

Who owns Old Rt 66 Nb/Fas 2 over Mazon River?

It is owned by the State Highway Agency.