US Bridges

IH 37 SB over Rock Quarry Branch

Fair

Live Oak County, Texas · 0.6 MI SE of SH 72 · Structure no. 161490007401182

Built
1981
44 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
12,467
2019 count
Owner
State
State Highway Agency

About this bridge

IH 37 SB over Rock Quarry Branch is a prestressed concrete stringer/multi-beam or girder carrying IH 37 SB over Rock Quarry Branch in Live Oak County, Texas. It was built in 1981, so it is 44 years old, younger 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 12,467 vehicles a day, roughly 20% of them trucks, projected to reach 12,710 by 2033. The structure is 180 ft (54.9 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIH 37 SB
CrossesRock Quarry Branch
Location0.6 MI SE of SH 72
RouteInterstate 37
CountyLive Oak County
StateTexas
Coordinates28.4836, -98.13533
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span60 ft (18.3 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,467 (2019)
Projected traffic12,710 by 2033
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 37 SB over Rock Quarry Branch built?

It was built in 1981, making it 44 years old in 2025.

What condition is IH 37 SB over Rock Quarry Branch 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 February 2024.

How much traffic does IH 37 SB over Rock Quarry Branch carry?

About 12,467 vehicles per day (2019 count), of which roughly 20% are trucks.

How long is IH 37 SB over Rock Quarry Branch?

The structure is 180 ft (54.9 m) long with a longest span of 60 ft (18.3 m) and a deck 40 ft wide.

Who owns IH 37 SB over Rock Quarry Branch?

It is owned by the State Highway Agency.