US Bridges

SH 3 SB over SH 146

Fair

Galveston County, Texas · 0.70 MI NW of Lp 197 · Structure no. 120850005103071

Built
1969
56 years old
Condition
Fair
inspected August 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
375 ft
4 main spans
Daily traffic
1,600
2013 count
Owner
State
State Highway Agency

About this bridge

SH 3 SB over SH 146 is a prestressed concrete stringer/multi-beam or girder carrying SH 3 SB over SH 146 in Galveston County, Texas. It was built in 1969, so it is 56 years old, older than the Texas average of 44.4 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 1,600 vehicles a day, roughly 6% of them trucks, projected to reach 2,240 by 2033. The structure is 375 ft (114.3 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSH 3 SB
CrossesSH 146
Location0.70 MI NW of Lp 197
RouteState Highway 3
CountyGalveston County
StateTexas
Coordinates29.34428, -94.9386
Functional classUrban Other Principal 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4 (+1 approach)
Design loadHS 20
Structure length375 ft (114.3 m)
Longest span90 ft (27.4 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2013)
Projected traffic2,240 by 2033
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 3 SB over SH 146 built?

It was built in 1969, making it 56 years old in 2025.

What condition is SH 3 SB over SH 146 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 August 2022.

How much traffic does SH 3 SB over SH 146 carry?

About 1,600 vehicles per day (2013 count), of which roughly 6% are trucks.

How long is SH 3 SB over SH 146?

The structure is 375 ft (114.3 m) long with a longest span of 90 ft (27.4 m) and a deck 38 ft wide.

Who owns SH 3 SB over SH 146?

It is owned by the State Highway Agency.