US Bridges

SH 16 over Big Jackson Branch

Good

San Saba County, Texas · 1.30 MI S of FM 501 · Structure no. 232060028906025

Built
1936
89 years old, rebuilt 1966
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
40 ft
6 main spans
Daily traffic
1,878
2020 count
Owner
State
State Highway Agency

About this bridge

SH 16 over Big Jackson Branch is a concrete culvert carrying SH 16 over Big Jackson Branch in San Saba County, Texas. It was built in 1936 and reconstructed in 1966, so it is 89 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,878 vehicles a day, roughly 10% of them trucks, projected to reach 1,970 by 2033. The structure is 40 ft (12.2 m) long and 49 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesSH 16
CrossesBig Jackson Branch
Location1.30 MI S of FM 501
RouteState Highway 16
CountySan Saba County
StateTexas
Coordinates30.96362, -98.70322
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length40 ft (12.2 m)
Longest span6 ft (1.8 m)
Deck width49 ft (15 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,878 (2020)
Projected traffic1,970 by 2033
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 16 over Big Jackson Branch built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1966.

What condition is SH 16 over Big Jackson Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does SH 16 over Big Jackson Branch carry?

About 1,878 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is SH 16 over Big Jackson Branch?

The structure is 40 ft (12.2 m) long with a longest span of 6 ft (1.8 m) and a deck 49 ft wide.

Who owns SH 16 over Big Jackson Branch?

It is owned by the State Highway Agency.