US Bridges

SH 123 over Alum Crk

Fair

Wilson County, Texas · 2.00 MI N of FM 3335 · Structure no. 152470036604019

Built
1931
94 years old, rebuilt 1956
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
35 ft
4 main spans
Daily traffic
5,581
2022 count
Owner
State
State Highway Agency

About this bridge

SH 123 over Alum Crk is a concrete culvert carrying SH 123 over Alum Crk in Wilson County, Texas. It was built in 1931 and reconstructed in 1956, so it is 94 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 5,581 vehicles a day, roughly 15% of them trucks, projected to reach 7,813 by 2042. The structure is 35 ft (10.7 m) long and 45 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSH 123
CrossesAlum Crk
Location2.00 MI N of FM 3335
RouteState Highway 123
CountyWilson County
StateTexas
Coordinates29.29854, -97.96446
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 spans4
Design loadH 15
Structure length35 ft (10.7 m)
Longest span8 ft (2.4 m)
Deck width45 ft (13.8 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,581 (2022)
Projected traffic7,813 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 123 over Alum Crk built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1956.

What condition is SH 123 over Alum Crk 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 July 2024.

How much traffic does SH 123 over Alum Crk carry?

About 5,581 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is SH 123 over Alum Crk?

The structure is 35 ft (10.7 m) long with a longest span of 8 ft (2.4 m) and a deck 45 ft wide.

Who owns SH 123 over Alum Crk?

It is owned by the State Highway Agency.