US Bridges

TR150 over Unnamed Trib

Good

Iroquois County, Illinois · Sec 8 T28N R13W 2nd · Structure no. 038325600000000

Built
1996
29 years old
Condition
Good
inspected April 2021
Type
Channel Beam
Concrete
Length
80 ft
3 main spans
Daily traffic
50
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR150 over Unnamed Trib is a concrete channel beam carrying TR150 over Unnamed Trib in Iroquois County, Illinois. It was built in 1996, so it is 29 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 51 by 2046. The structure is 80 ft (24.5 m) long and 26 ft wide.

CarriesTR150
CrossesUnnamed Trib
LocationSec 8 T28N R13W 2nd
RouteCounty Highway 0
Coordinates40.90583, -87.88489
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to 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

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length80 ft (24.5 m)
Longest span26 ft (7.9 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic51 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 TR150 over Unnamed Trib built?

It was built in 1996, making it 29 years old in 2025.

What condition is TR150 over Unnamed 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 April 2021.

How much traffic does TR150 over Unnamed Trib carry?

About 50 vehicles per day (2022 count).

How long is TR150 over Unnamed Trib?

The structure is 80 ft (24.5 m) long with a longest span of 26 ft (7.9 m) and a deck 26 ft wide.

Who owns TR150 over Unnamed Trib?

It is owned by the Town or Township Highway Agency.