US Bridges

TR 208 a over Rock Creek

Fair

Randolph County, Illinois · TR 208A over Rock Ti · Structure no. 079425000000000

Built
1901
124 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
48 ft
3 main spans
Daily traffic
10
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 208 a over Rock Creek is a concrete slab carrying TR 208 a over Rock Creek in Randolph County, Illinois. It was built in 1901, so it is 124 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 5 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 10 vehicles a day, roughly 20% of them trucks, projected to reach 10 by 2046. The structure is 48 ft (14.6 m) long and 18 ft wide.

Location

Open in Google Maps
CarriesTR 208 a
CrossesRock Creek
LocationTR 208A over Rock Ti
RouteCounty Highway 0
CountyRandolph County
StateIllinois
Coordinates37.83817, -89.70213
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating36.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span24 ft (7.2 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2024)
Projected traffic10 by 2046
Trucks20%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$139.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 208 a over Rock Creek built?

It was built in 1901, making it 124 years old in 2025.

What condition is TR 208 a over Rock Creek 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 December 2024.

How much traffic does TR 208 a over Rock Creek carry?

About 10 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is TR 208 a over Rock Creek?

The structure is 48 ft (14.6 m) long with a longest span of 24 ft (7.2 m) and a deck 18 ft wide.

Who owns TR 208 a over Rock Creek?

It is owned by the Town or Township Highway Agency.