US Bridges

SR 13 over Marion Road

Fair

Grant County, Indiana · 00.11 S SR 18 · Structure no. 004790

Built
1935
90 years old, rebuilt 1999
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
40 ft
1 main span
Daily traffic
5,642
2018 count
Owner
State
State Highway Agency

About this bridge

SR 13 over Marion Road is a concrete arch - deck carrying SR 13 over Marion Road in Grant County, Indiana. It was built in 1935 and reconstructed in 1999, so it is 90 years old, older than the Indiana average of 46.6 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 5,642 vehicles a day, roughly 12% of them trucks, projected to reach 11,391 by 2034. The structure is 40 ft (12.1 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 13
CrossesMarion Road
Location00.11 S SR 18
RouteState Highway 13
CountyGrant County
StateIndiana
Coordinates40.57533, -85.82336
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating27.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length40 ft (12.1 m)
Longest span36 ft (10.9 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,642 (2018)
Projected traffic11,391 by 2034
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 13 over Marion Road built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1999.

What condition is SR 13 over Marion Road 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 November 2023.

How much traffic does SR 13 over Marion Road carry?

About 5,642 vehicles per day (2018 count), of which roughly 12% are trucks.

How long is SR 13 over Marion Road?

The structure is 40 ft (12.1 m) long with a longest span of 36 ft (10.9 m) and a deck 42 ft wide.

Who owns SR 13 over Marion Road?

It is owned by the State Highway Agency.