US Bridges

TR-78 over FAI-70

Fair

Effingham County, Illinois · 5.5 MI E Altamnt Int · Structure no. 025005900000000

Built
1961
64 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
239 ft
4 main spans
Daily traffic
200
2023 count
Owner
State
State Highway Agency

About this bridge

TR-78 over FAI-70 is a steel continuous stringer/multi-beam or girder carrying TR-78 over FAI-70 in Effingham County, Illinois. It was built in 1961, so it is 64 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 200 vehicles a day, roughly 6% of them trucks, projected to reach 265 by 2046. The structure is 239 ft (72.8 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTR-78
CrossesFAI-70
Location5.5 MI E Altamnt Int
RouteCounty Highway 0
CountyEffingham County
StateIllinois
Coordinates39.07293, -88.65243
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.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length239 ft (72.8 m)
Longest span73 ft (22.3 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic265 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$994,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was TR-78 over FAI-70 built?

It was built in 1961, making it 64 years old in 2025.

What condition is TR-78 over FAI-70 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 September 2024.

How much traffic does TR-78 over FAI-70 carry?

About 200 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is TR-78 over FAI-70?

The structure is 239 ft (72.8 m) long with a longest span of 73 ft (22.3 m) and a deck 30 ft wide.

Who owns TR-78 over FAI-70?

It is owned by the State Highway Agency.