US Bridges

TR 78 over Mauvaise Terre Creek

Fair

Morgan County, Illinois · 3.5M NW Jacksonvill · Structure no. 069318300000000

Built
1981
44 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
124 ft
1 main span
Daily traffic
425
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 78 over Mauvaise Terre Creek is a prestressed concrete box beam or girders - multiple carrying TR 78 over Mauvaise Terre Creek in Morgan County, Illinois. It was built in 1981, so it is 44 years old, younger 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 425 vehicles a day, roughly 14% of them trucks, projected to reach 328 by 2046. The structure is 124 ft (37.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 78
CrossesMauvaise Terre Creek
Location3.5M NW Jacksonvill
RouteCounty Highway 0
CountyMorgan County
StateIllinois
Coordinates39.76738, -90.32258
Functional classUrban 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadHS 20
Structure length124 ft (37.8 m)
Longest span41 ft (12.5 m)
Deck width28 ft (8.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2024)
Projected traffic328 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 78 over Mauvaise Terre Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is TR 78 over Mauvaise Terre 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 November 2023.

How much traffic does TR 78 over Mauvaise Terre Creek carry?

About 425 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is TR 78 over Mauvaise Terre Creek?

The structure is 124 ft (37.8 m) long with a longest span of 41 ft (12.5 m) and a deck 28 ft wide.

Who owns TR 78 over Mauvaise Terre Creek?

It is owned by the Town or Township Highway Agency.