US Bridges

Il 177 over W Trib Grand Pt Crk

Good

Washington County, Illinois · 7 MI East JCT Il 127 · Structure no. 095200800000000

Built
1995
30 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
1,600
2023 count
Owner
State
State Highway Agency

About this bridge

Il 177 over W Trib Grand Pt Crk is a concrete continuous culvert carrying Il 177 over W Trib Grand Pt Crk in Washington County, Illinois. It was built in 1995, so it is 30 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 1,600 vehicles a day, roughly 14% of them trucks, projected to reach 2,178 by 2046. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 28 mi (45 km).

CarriesIl 177
CrossesW Trib Grand Pt Crk
Location7 MI East JCT Il 127
RouteState Highway 177
Coordinates38.44104, -89.24005
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.7 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2023)
Projected traffic2,178 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 Il 177 over W Trib Grand Pt Crk built?

It was built in 1995, making it 30 years old in 2025.

What condition is Il 177 over W Trib Grand Pt Crk 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 July 2024.

How much traffic does Il 177 over W Trib Grand Pt Crk carry?

About 1,600 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Il 177 over W Trib Grand Pt Crk?

The structure is 29 ft (8.7 m) long with a longest span of 13 ft (4 m).

Who owns Il 177 over W Trib Grand Pt Crk?

It is owned by the State Highway Agency.