US Bridges

Poland RD over Slate Run

PoorPosted for load

Putnam County, Indiana · 00.50 W of CR 550 W · Structure no. 6700151

Built
1925
100 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
230
2023 count
Owner
County
County Highway Agency

About this bridge

Poland RD over Slate Run is a steel stringer/multi-beam or girder carrying Poland RD over Slate Run in Putnam County, Indiana. It was built in 1925, so it is 100 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 4 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 230 vehicles a day, roughly 4% of them trucks, projected to reach 320 by 2043. The structure is 31 ft (9.3 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPoland RD
CrossesSlate Run
Location00.50 W of CR 550 W
RouteCounty Highway 0
StateIndiana
Coordinates39.48166, -86.95392
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
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating11.9 US tons
Inventory rating11.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length31 ft (9.3 m)
Longest span28 ft (8.4 m)
Deck width20 ft (6 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2023)
Projected traffic320 by 2043
Trucks4%
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

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$2.3 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Poland RD over Slate Run built?

It was built in 1925, making it 100 years old in 2025.

What condition is Poland RD over Slate Run 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 March 2024.

How much traffic does Poland RD over Slate Run carry?

About 230 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Poland RD over Slate Run?

The structure is 31 ft (9.3 m) long with a longest span of 28 ft (8.4 m) and a deck 20 ft wide.

Who owns Poland RD over Slate Run?

It is owned by the County Highway Agency.