US Bridges

S Illinois Ave. over Rocky Fork Mohican River

Fair

Richland County, Ohio · 75FT S of Hickory Lane · Structure no. 7034970

Built
1963
62 years old, rebuilt 1988
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
8,534
2015 count
Owner
County
County Highway Agency

About this bridge

S Illinois Ave. over Rocky Fork Mohican River is a prestressed concrete box beam or girders - multiple carrying S Illinois Ave. over Rocky Fork Mohican River in Richland County, Ohio. It was built in 1963 and reconstructed in 1988, so it is 62 years old, older than the Ohio average of 47.3 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 8,534 vehicles a day, roughly 7% of them trucks, projected to reach 11,845 by 2035. The structure is 63 ft (19.2 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesS Illinois Ave.
CrossesRocky Fork Mohican River
Location75FT S of Hickory Lane
RouteCounty Highway C0424
CountyRichland County
StateOhio
Coordinates40.75104, -82.48436
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating41.4 US tons
Inventory rating31.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length63 ft (19.2 m)
Longest span62 ft (18.8 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,534 (2015)
Projected traffic11,845 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$228,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S Illinois Ave. over Rocky Fork Mohican River built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1988.

What condition is S Illinois Ave. over Rocky Fork Mohican River 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 July 2024.

How much traffic does S Illinois Ave. over Rocky Fork Mohican River carry?

About 8,534 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is S Illinois Ave. over Rocky Fork Mohican River?

The structure is 63 ft (19.2 m) long with a longest span of 62 ft (18.8 m) and a deck 28 ft wide.

Who owns S Illinois Ave. over Rocky Fork Mohican River?

It is owned by the County Highway Agency.