FM 758 over Alligator Creek

Good

Guadalupe County, Texas · 2.5 MI W of SH 123 · Structure no. 150950098702004

Built: 1948; 77 years old
Condition: Good; inspected August 2024
Type: Slab; Concrete
Length: 100 ft; 4 main spans
Daily traffic: 1,110; 2013 count
Owner: State; State Highway Agency

About this bridge

FM 758 over Alligator Creek is a concrete slab carrying FM 758 over Alligator Creek in Guadalupe County, Texas. It was built in 1948, so it is 77 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 1,110 vehicles a day, roughly 5% of them trucks, projected to reach 1,550 by 2033. The structure is 100 ft (30.5 m) long and 23 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesFM 758

CrossesAlligator Creek

Location2.5 MI W of SH 123

RouteState Highway 758

CountyGuadalupe County

StateTexas

Coordinates29.70138, -98.00592

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionAugust 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour within limits of footing or piles

Structural evaluation7: Better than present minimum criteria

Deck geometry2: Basically intolerable, requiring high priority of replacement

Waterway adequacy4: Meets minimum tolerable limits to be left in place as is

Approach roadway alignment8: Equal to present desirable criteria

Operating rating75 US tons

Inventory rating36 US tons

Structure

Structure typeSlab

MaterialConcrete

DeckConcrete, cast-in-place

Main spans4

Design loadH 15

Structure length100 ft (30.5 m)

Longest span25 ft (7.6 m)

Deck width23 ft (7.1 m)

Roadway width21 ft (6.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,110 (2013)

Projected traffic1,550 by 2033

Trucks5%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed6.2 mi (10 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 proposedOther structural work, including hydraulic replacements

Estimated improvement cost$5,000

NavigationNo navigation control on waterway

Frequently asked questions

When was FM 758 over Alligator Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is FM 758 over Alligator Creek 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 August 2024.

How much traffic does FM 758 over Alligator Creek carry?

About 1,110 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is FM 758 over Alligator Creek?

The structure is 100 ft (30.5 m) long with a longest span of 25 ft (7.6 m) and a deck 23 ft wide.

Who owns FM 758 over Alligator Creek?

It is owned by the State Highway Agency.