US Bridges

TR 232 /300 TH ST over I-88

Fair

Rock Island County, Illinois · 2.5 M. Sw. Hillsdale · Structure no. 081012700000000

Built
1976
49 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
246 ft
2 main spans
Daily traffic
25
2020 count
Owner
State
State Highway Agency

About this bridge

TR 232 /300 TH ST over I-88 is a steel continuous stringer/multi-beam or girder carrying TR 232 /300 TH ST over I-88 in Rock Island County, Illinois. It was built in 1976, so it is 49 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 25 vehicles a day, projected to reach 25 by 2046. The structure is 246 ft (75 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesTR 232 /300 TH ST
CrossesI-88
Location2.5 M. Sw. Hillsdale
RouteCounty Highway 0
CountyRock Island County
StateIllinois
Coordinates41.58336, -90.20674
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 15
Structure length246 ft (75 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2020)
Projected traffic25 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was TR 232 /300 TH ST over I-88 built?

It was built in 1976, making it 49 years old in 2025.

What condition is TR 232 /300 TH ST over I-88 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does TR 232 /300 TH ST over I-88 carry?

About 25 vehicles per day (2020 count).

How long is TR 232 /300 TH ST over I-88?

The structure is 246 ft (75 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns TR 232 /300 TH ST over I-88?

It is owned by the State Highway Agency.