US Bridges

Oak Crest Rd/ TR 1 over I-72

Fair

Sangamon County, Illinois · 2.9M E I-55 · Structure no. 084015100000000

Built
1974
51 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
264 ft
2 main spans
Daily traffic
1,350
2022 count
Owner
State
State Highway Agency

About this bridge

Oak Crest Rd/ TR 1 over I-72 is a steel continuous stringer/multi-beam or girder carrying Oak Crest Rd/ TR 1 over I-72 in Sangamon County, Illinois. It was built in 1974, so it is 51 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 1,350 vehicles a day, roughly 1% of them trucks, projected to reach 1,667 by 2046. The structure is 264 ft (80.6 m) long and 36 ft wide.

Location

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CarriesOak Crest Rd/ TR 1
CrossesI-72
Location2.9M E I-55
RouteCounty Highway 0
CountySangamon County
StateIllinois
Coordinates39.82232, -89.55008
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length264 ft (80.6 m)
Longest span118 ft (36.1 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2022)
Projected traffic1,667 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Oak Crest Rd/ TR 1 over I-72 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Oak Crest Rd/ TR 1 over I-72 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 January 2025.

How much traffic does Oak Crest Rd/ TR 1 over I-72 carry?

About 1,350 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Oak Crest Rd/ TR 1 over I-72?

The structure is 264 ft (80.6 m) long with a longest span of 118 ft (36.1 m) and a deck 36 ft wide.

Who owns Oak Crest Rd/ TR 1 over I-72?

It is owned by the State Highway Agency.