US Bridges

TR 77 over Little Cache CR Trib

Good

Johnson County, Illinois · NE1/4 SEC34 T11S R3E · Structure no. 044308500000000

Built
1984
41 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
50
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 77 over Little Cache CR Trib is a concrete slab carrying TR 77 over Little Cache CR Trib in Johnson County, Illinois. It was built in 1984, so it is 41 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, roughly 16% of them trucks, projected to reach 53 by 2046. The structure is 24 ft (7.3 m) long and 26 ft wide.

CarriesTR 77
CrossesLittle Cache CR Trib
LocationNE1/4 SEC34 T11S R3E
RouteCounty Highway 0
Coordinates37.52282, -88.85987
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 inspectionMarch 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic53 by 2046
Trucks16%
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 TR 77 over Little Cache CR Trib built?

It was built in 1984, making it 41 years old in 2025.

What condition is TR 77 over Little Cache CR 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 March 2023.

How much traffic does TR 77 over Little Cache CR Trib carry?

About 50 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is TR 77 over Little Cache CR Trib?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 26 ft wide.

Who owns TR 77 over Little Cache CR Trib?

It is owned by the Town or Township Highway Agency.