US Bridges

Gregory Road over Mississinewa River

PoorPosted for load

Delaware County, Indiana · 00.10 W of CR 450 E · Structure no. 1800036

Built
1902
123 years old, rebuilt 1985
Condition
Poor
inspected October 2024
Type
Truss - Thru
Steel
Length
184 ft
1 main span
Daily traffic
600
2023 count
Owner
County
County Highway Agency

About this bridge

Gregory Road over Mississinewa River is a steel truss - thru carrying Gregory Road over Mississinewa River in Delaware County, Indiana. It was built in 1902 and reconstructed in 1985, so it is 123 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 600 vehicles a day, roughly 1% of them trucks, projected to reach 990 by 2043. The structure is 184 ft (56 m) long and 16 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesGregory Road
CrossesMississinewa River
Location00.10 W of CR 450 E
RouteCounty Highway 80
CountyDelaware County
StateIndiana
Coordinates40.31305, -85.30654
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating11.2 US tons
Inventory rating6.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length184 ft (56 m)
Longest span180 ft (54.8 m)
Deck width16 ft (4.8 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic600 (2023)
Projected traffic990 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5.3 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gregory Road over Mississinewa River built?

It was built in 1902, making it 123 years old in 2025. It was reconstructed in 1985.

What condition is Gregory Road over Mississinewa River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Gregory Road over Mississinewa River carry?

About 600 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Gregory Road over Mississinewa River?

The structure is 184 ft (56 m) long with a longest span of 180 ft (54.8 m) and a deck 16 ft wide.

Who owns Gregory Road over Mississinewa River?

It is owned by the County Highway Agency.