US Bridges

TR 73 over Lamb Br Trib

Good

Clark County, Illinois · 1.3 MI SE Westfield · Structure no. 012331100000000

Built
1998
27 years old
Condition
Good
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
100
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 73 over Lamb Br Trib is a prestressed concrete box beam or girders - multiple carrying TR 73 over Lamb Br Trib in Clark County, Illinois. It was built in 1998, so it is 27 years old, younger 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 100 vehicles a day, roughly 6% of them trucks, projected to reach 101 by 2046. The structure is 40 ft (12.3 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR 73
CrossesLamb Br Trib
Location1.3 MI SE Westfield
RouteCounty Highway 0
Coordinates39.43774, -87.96339
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span38 ft (11.5 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic101 by 2046
Trucks6%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 TR 73 over Lamb Br Trib built?

It was built in 1998, making it 27 years old in 2025.

What condition is TR 73 over Lamb Br Trib 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 February 2024.

How much traffic does TR 73 over Lamb Br Trib carry?

About 100 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is TR 73 over Lamb Br Trib?

The structure is 40 ft (12.3 m) long with a longest span of 38 ft (11.5 m) and a deck 28 ft wide.

Who owns TR 73 over Lamb Br Trib?

It is owned by the Town or Township Highway Agency.