US Bridges

TR 498 (12.25 E) over Griffith Creek

Fair

Sangamon County, Illinois · 1.5 W Mechanicsburg · Structure no. 084360900000000

Built
1978
47 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
84 ft
3 main spans
Daily traffic
125
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 498 (12.25 E) over Griffith Creek is a prestressed concrete box beam or girders - multiple carrying TR 498 (12.25 E) over Griffith Creek in Sangamon County, Illinois. It was built in 1978, so it is 47 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 125 vehicles a day, projected to reach 126 by 2046. The structure is 84 ft (25.6 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesTR 498 (12.25 E)
CrossesGriffith Creek
Location1.5 W Mechanicsburg
RouteCounty Highway 0
CountySangamon County
StateIllinois
Coordinates39.79907, -89.42086
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length84 ft (25.6 m)
Longest span28 ft (8.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2022)
Projected traffic126 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
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 498 (12.25 E) over Griffith Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is TR 498 (12.25 E) over Griffith 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 April 2024.

How much traffic does TR 498 (12.25 E) over Griffith Creek carry?

About 125 vehicles per day (2022 count).

How long is TR 498 (12.25 E) over Griffith Creek?

The structure is 84 ft (25.6 m) long with a longest span of 28 ft (8.4 m) and a deck 26 ft wide.

Who owns TR 498 (12.25 E) over Griffith Creek?

It is owned by the Town or Township Highway Agency.