US Bridges

I-70 (wb) over N Fork Embarrass R

Fair

Clark County, Illinois · Martinsville · Structure no. 012005100000000

Built
1968
57 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
336 ft
4 main spans
Daily traffic
11,400
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 (wb) over N Fork Embarrass R is a steel continuous stringer/multi-beam or girder carrying I-70 (wb) over N Fork Embarrass R in Clark County, Illinois. It was built in 1968, so it is 57 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 11,400 vehicles a day, roughly 60% of them trucks, projected to reach 13,181 by 2046. The structure is 336 ft (102.3 m) long and 36 ft wide.

Location

Open in Google Maps
CarriesI-70 (wb)
CrossesN Fork Embarrass R
LocationMartinsville
RouteInterstate 70
CountyClark County
StateIllinois
Coordinates39.3524, -87.90295
Functional classRural Principal Arterial - Interstate

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.
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 protection7 GoodSome minor problems.
Last inspectionDecember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length336 ft (102.3 m)
Longest span95 ft (28.9 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,400 (2023)
Projected traffic13,181 by 2046
Trucks60%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$1.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-70 (wb) over N Fork Embarrass R built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-70 (wb) over N Fork Embarrass R 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 2023.

How much traffic does I-70 (wb) over N Fork Embarrass R carry?

About 11,400 vehicles per day (2023 count), of which roughly 60% are trucks.

How long is I-70 (wb) over N Fork Embarrass R?

The structure is 336 ft (102.3 m) long with a longest span of 95 ft (28.9 m) and a deck 36 ft wide.

Who owns I-70 (wb) over N Fork Embarrass R?

It is owned by the State Highway Agency.