US Bridges

Highland Ave over Mississinewa River

FairPosted for load

Grant County, Indiana · 00.03 MI W of Washington · Structure no. 2700166

Built
1910
115 years old, rebuilt 1956
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
230 ft
5 main spans
Daily traffic
14,000
2021 count
Owner
County
County Highway Agency

About this bridge

Highland Ave over Mississinewa River is a concrete continuous slab carrying Highland Ave over Mississinewa River in Grant County, Indiana. It was built in 1910 and reconstructed in 1956, so it is 115 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 14,000 vehicles a day, roughly 6% of them trucks, projected to reach 21,390 by 2041. The structure is 230 ft (70.1 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesHighland Ave
CrossesMississinewa River
Location00.03 MI W of Washington
RouteCity Street 0
CountyGrant County
StateIndiana
Coordinates40.57627, -85.65949
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.1 US tons
Inventory rating28.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span52 ft (16 m)
Deck width41 ft (12.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,000 (2021)
Projected traffic21,390 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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$6.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Highland Ave over Mississinewa River built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1956.

What condition is Highland Ave over Mississinewa 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 October 2023.

How much traffic does Highland Ave over Mississinewa River carry?

About 14,000 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Highland Ave over Mississinewa River?

The structure is 230 ft (70.1 m) long with a longest span of 52 ft (16 m) and a deck 41 ft wide.

Who owns Highland Ave over Mississinewa River?

It is owned by the County Highway Agency.