US Bridges

Robson RD over Robson Ditch

Good

Lorain County, Ohio · .21 MI West of Grafton RD · Structure no. 4739591

Built
1973
52 years old, rebuilt 2020
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
200
2020 count
Owner
County
County Highway Agency

About this bridge

Robson RD over Robson Ditch is a steel stringer/multi-beam or girder carrying Robson RD over Robson Ditch in Lorain County, Ohio. It was built in 1973 and reconstructed in 2020, so it is 52 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, roughly 2% of them trucks, projected to reach 225 by 2040. The structure is 28 ft (8.4 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRobson RD
CrossesRobson Ditch
Location.21 MI West of Grafton RD
CountyLorain County
StateOhio
Coordinates41.32536, -82.0755
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.5 US tons
Inventory rating19.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckNot applicable
Main spans1
Design loadHL 93
Structure length28 ft (8.4 m)
Longest span24 ft (7.3 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic200 (2020)
Projected traffic225 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Robson RD over Robson Ditch built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2020.

What condition is Robson RD over Robson Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Robson RD over Robson Ditch carry?

About 200 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Robson RD over Robson Ditch?

The structure is 28 ft (8.4 m) long with a longest span of 24 ft (7.3 m) and a deck 30 ft wide.

Who owns Robson RD over Robson Ditch?

It is owned by the County Highway Agency.