US Bridges

Gladesford DR over Natural Drain

Fair

Allen County, Indiana · 00.40 E Iron Bridge RD · Structure no. 0200307

Built
1976
49 years old
Condition
Fair
inspected May 2024
Type
Slab
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
10
2018 count
Owner
County
County Highway Agency

About this bridge

Gladesford DR over Natural Drain is a prestressed concrete slab carrying Gladesford DR over Natural Drain in Allen County, Indiana. It was built in 1976, so it is 49 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.

It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 16 by 2038. The structure is 26 ft (7.9 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesGladesford DR
CrossesNatural Drain
Location00.40 E Iron Bridge RD
RouteCounty Highway 1605
StateIndiana
Coordinates40.99091, -85.29399
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.7 US tons
Inventory rating39.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic16 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Gladesford DR over Natural Drain built?

It was built in 1976, making it 49 years old in 2025.

What condition is Gladesford DR over Natural Drain 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 May 2024.

How much traffic does Gladesford DR over Natural Drain carry?

About 10 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is Gladesford DR over Natural Drain?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns Gladesford DR over Natural Drain?

It is owned by the County Highway Agency.