US Bridges

Hammatt Avenue over UP RR Tracks

Fair

Merced County, California · 0.2 MI South of SR 99 · Structure no. 39C0356

Built
1997
28 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
175 ft
3 main spans
Daily traffic
2,334
2000 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hammatt Avenue over UP RR Tracks is a concrete continuous box beam or girders - multiple carrying Hammatt Avenue over UP RR Tracks in Merced County, California. It was built in 1997, so it is 28 years old, younger than the California average of 54.8 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 2,334 vehicles a day, roughly 3% of them trucks, projected to reach 5,398 by 2041. The structure is 175 ft (53.3 m) long and 59 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHammatt Avenue
CrossesUP RR Tracks
Location0.2 MI South of SR 99
RouteCity Street 0
CountyMerced County
StateCalifornia
Coordinates37.38347, -120.71354
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length175 ft (53.3 m)
Longest span68 ft (20.6 m)
Deck width59 ft (18.1 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,334 (2000)
Projected traffic5,398 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Hammatt Avenue over UP RR Tracks built?

It was built in 1997, making it 28 years old in 2025.

What condition is Hammatt Avenue over UP RR Tracks 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 Hammatt Avenue over UP RR Tracks carry?

About 2,334 vehicles per day (2000 count), of which roughly 3% are trucks.

How long is Hammatt Avenue over UP RR Tracks?

The structure is 175 ft (53.3 m) long with a longest span of 68 ft (20.6 m) and a deck 59 ft wide.

Who owns Hammatt Avenue over UP RR Tracks?

It is owned by the City or Municipal Highway Agency.